TY  - CHAP
A1  - Kern, Alexander
A1  - Imani Vashiani, Anahita
A1  - Timmermanns, Tobias
T1  - Threat for human beings due to touch voltages and body currents caused by direct lightning strikes in case of non-isolated lightning protection systems using natural components
T2  - 35th International Conference on Lightning Protection (ICLP) and XVI International Symposium on Lightning Protection (SIPDA)
N2  - For typical cases of non-isolated lightning protection systems (LPS) the impulse currents are investigated which may flow through a human body directly touching a structural part of the LPS. Based on a basic LPS model with conventional down-conductors especially the cases of external and internal steel columns and metal façades are considered and compared. Numerical simulations of the line quantities voltages and currents in the time domain are performed with an equivalent circuit of the entire LPS.
As a result it can be stated that by increasing the number of conventional down-conductors and external steel columns the threat for a human being can indeed be reduced, but not down to an acceptable limit. In case of internal steel columns used as natural down-conductors the threat can be reduced sufficiently, depending on the low-resistive connection of the steel columns to the lightning equipotential bonding or the earth termination system, resp. If a metal façade is used the threat for human beings touching is usually very low, if the façade is sufficiently interconnected and multiply connected to the lightning equipotential bonding or the earth termination system, resp.
KW  - Lightning protection system
KW  - down-conductor
KW  - steel columns
KW  - metal façade
KW  - touch voltage
Y1  - 2021
SN  - 978-1-6654-2346-5
U6  - https://doi.org/10.1109/ICLPandSIPDA54065.2021.9627465
N1  - 35th International Conference on Lightning Protection (ICLP) and XVI International Symposium on Lightning Protection (SIPDA), 20-26 Sept. 2021, Colombo, Sri Lanka
PB  - IEEE
CY  - New York, NY
ER  - 
TY  - BOOK
A1  - Pieper, Martin
T1  - Quantum mechanics: Introduction to mathematical formulation
N2  - Anyone who has always wanted to understand the hieroglyphs on Sheldon's blackboard in the TV series The Big Bang Theory or who wanted to know exactly what the fate of Schrödinger's cat is all about will find a short, descriptive introduction to the world of quantum mechanics in this essential. The text particularly focuses on the mathematical description in the Hilbert space. The content goes beyond popular scientific presentations, but is nevertheless suitable for readers without special prior knowledge thanks to the clear examples.
KW  - Quantenmechanik
KW  - Hilbert Room
KW  - Postulates
KW  - Schrödingers cat
KW  - Operators
Y1  - 2021
SN  - 978-3-658-32644-9
SN  - 978-3-658-32645-6
U6  - https://doi.org/10.1007/978-3-658-32645-6
PB  - Springer
CY  - Wiesbaden
ER  - 
TY  - JOUR
A1  - Schüller-Ruhl, Aaron
A1  - Dinstühler, Leonard
A1  - Senger, Thorsten
A1  - Bergfeld, Stefan
A1  - Ingenhag, Christian
A1  - Fleischhaker, Robert
ED  - Mackenzie, Jacob
T1  - Direct fabrication of arbitrary phase masks in optical glass via ultra-short pulsed laser writing of refractive index modifications
JF  - Applied Physics B
N2  - We study the possibility to fabricate an arbitrary phase mask in a one-step laser-writing process inside the volume of an optical glass substrate. We derive the phase mask from a Gerchberg–Saxton-type algorithm as an array and create each individual phase shift using a refractive index modification of variable axial length. We realize the variable axial length by superimposing refractive index modifications induced by an ultra-short pulsed laser at different focusing depth. Each single modification is created by applying 1000 pulses with 15 μJ pulse energy at 100 kHz to a fixed spot of 25 μm diameter and the focus is then shifted axially in steps of 10 μm. With several proof-of-principle examples, we show the feasibility of our method. In particular, we identify the induced refractive index change to about a value of Δn=1.5⋅10−3. We also determine our current limitations by calculating the overlap in the form of a scalar product and we discuss possible future improvements.
Y1  - 2022
U6  - https://doi.org/10.1007/s00340-022-07928-2
SN  - 1432-0649 (Online)
SN  - 0946-2171 (Print)
N1  - Corresponding author: Robert Fleischhaker
VL  - 128
IS  - Article number: 208
SP  - 1
EP  - 11
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Srivastava, A.
A1  - Chahar, V.
A1  - Sharma, V.
A1  - Sun, Y.
A1  - Bol, R.
A1  - Knolle, F.
A1  - Schnug, E.
A1  - Hoyler, Friedrich
A1  - Naskar, N.
A1  - Lahiri, S.
A1  - Patnaik, R.
T1  - Study of uranium toxicity using low-background gamma-ray spectrometry
JF  - Journal of Radioanalytical and Nuclear Chemistry
Y1  - 2017
U6  - https://doi.org/10.1007/s10967-017-5466-9
SN  - 1588-2780
IS  - Online first
SP  - 1
EP  - 7
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Keller, Johannes
A1  - Rath, Volker
A1  - Bruckmann, Johanna
A1  - Mottaghy, Darius
A1  - Clauser, Christoph
A1  - Wolf, Andreas
A1  - Seidler, Ralf
A1  - Bücker, H. Martin
A1  - Klitzsch, Norbert
T1  - SHEMAT-Suite: An open-source code for simulating flow, heat and species transport in porous media
JF  - SoftwareX
N2  - SHEMAT-Suite is a finite-difference open-source code for simulating coupled flow, heat and species transport in porous media. The code, written in Fortran-95, originates from geoscientific research in the fields of geothermics and hydrogeology. It comprises: (1) a versatile handling of input and output, (2) a modular framework for subsurface parameter modeling, (3) a multi-level OpenMP parallelization, (4) parameter estimation and data assimilation by stochastic approaches (Monte Carlo, Ensemble Kalman filter) and by deterministic Bayesian approaches based on automatic differentiation for calculating exact (truncation error-free) derivatives of the forward code.
Y1  - 2020
U6  - https://doi.org/10.1016/j.softx.2020.100533
SN  - 2352-7110
VL  - 12
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Nobis, Moritz
A1  - Schmitt, Carlo
A1  - Schemm, Ralf
A1  - Schnettler, Armin
T1  - Pan-European CVAR-constrained stochastic unit commitment in day-ahead and intraday electricity markets
JF  - Energies
N2  - The fundamental modeling of energy systems through individual unit commitment decisions is crucial for energy system planning. However, current large-scale models are not capable of including uncertainties or even risk-averse behavior arising from forecasting errors of variable renewable energies. However, risks associated with uncertain forecasting errors have become increasingly relevant within the process of decarbonization. The intraday market serves to compensate for these forecasting errors. Thus, the uncertainty of forecasting errors results in uncertain intraday prices and quantities. Therefore, this paper proposes a two-stage risk-constrained stochastic optimization approach to fundamentally model unit commitment decisions facing an uncertain intraday market. By the nesting of Lagrangian relaxation and an extended Benders decomposition, this model can be applied to large-scale, e.g., pan-European, power systems. The approach is applied to scenarios for 2023—considering a full nuclear phase-out in Germany—and 2035—considering a full coal phase-out in Germany. First, the influence of the risk factors is evaluated. Furthermore, an evaluation of the market prices shows an increase in price levels as well as an increasing day-ahead-intraday spread in 2023 and in 2035. Finally, it is shown that intraday cross-border trading has a significant influence on trading volumes and prices and ensures a more efficient allocation of resources.
Y1  - 2020
U6  - https://doi.org/10.3390/en13092339
SN  - 1996-1073
N1  - Special Issue Uncertainties and Risk Management in Competitive Energy Markets
VL  - 13
IS  - Art. 2339
SP  - 1
EP  - 35
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Heel, Mareike van
A1  - Dikta, Gerhard
A1  - Braekers, Roel
T1  - Bootstrap based goodness‑of‑fit tests for binary multivariate regression models
JF  - Journal of the Korean Statistical Society
N2  - We consider a binary multivariate regression model where the conditional expectation of a binary variable given a higher-dimensional input variable belongs to a parametric family. Based on this, we introduce a model-based bootstrap (MBB) for higher-dimensional input variables. This test can be used to check whether a sequence of independent and identically distributed observations belongs to such a parametric family. The approach is based on the empirical residual process introduced by Stute (Ann Statist 25:613–641, 1997). In contrast to Stute and Zhu’s approach (2002) Stute & Zhu (Scandinavian J Statist 29:535–545, 2002), a transformation is not required. Thus, any problems associated with non-parametric regression estimation are avoided. As a result, the MBB method is much easier for users to implement. To illustrate the power of the MBB based tests, a small simulation study is performed. Compared to the approach of Stute & Zhu (Scandinavian J Statist 29:535–545, 2002), the simulations indicate a slightly improved power of the MBB based method. Finally, both methods are applied to a real data set.
Y1  - 2021
U6  - https://doi.org/10.1007/s42952-021-00142-4
SN  - 2005-2863 (Online)
SN  - 1226-3192 (Print)
N1  - Corresponding author: Mareike van Heel
VL  - 51
PB  - Springer Nature
CY  - Singapur
ER  - 
TY  - CHAP
A1  - Nierle, Elisabeth
A1  - Pieper, Martin
T1  - Measuring social impacts in engineering education to improve sustainability skills
T2  - European Society for Engineering Education (SEFI)
N2  - In times of social climate protection movements, such as Fridays for Future, the priorities of society, industry and higher education are currently changing. The consideration of sustainability challenges is increasing. In the context of sustainable development, social skills are crucial to achieving the United Nations Sustainable Development Goals (SDGs). In particular, the impact that educational activities have on people, communities and society is therefore coming to the fore. Research has shown that people with high levels of social competence are better able to manage stressful situations, maintain positive relationships and communicate effectively. They are also associated with better academic performance and career success. However, especially in engineering programs, the social pillar is underrepresented compared to the environmental and economic pillars.

In response to these changes, higher education institutions should be more aware of their social impact - from individual forms of teaching to entire modules and degree programs. To specifically determine the potential for improvement and derive resulting change for further development, we present an initial framework for social impact measurement by transferring already established approaches from the business sector to the education sector. To demonstrate the applicability, we measure the key competencies taught in undergraduate engineering programs in Germany.

The aim is to prepare the students for success in the modern world of work and their future contribution to sustainable development. Additionally, the university can include the results in its sustainability report. Our method can be applied to different teaching methods and enables their comparison.
KW  - Social impact measurement
KW  - Key competences
KW  - Sustainable engineering education
KW  - Future skills
Y1  - 2023
U6  - https://doi.org/10.21427/QPR4-0T22
N1  - 51st Annual Conference of the European Society for Engineering Education, Technological University Dublin, 10th-14th September, 2023
N1  - Corresponding Author: Elisabeth Nierle
ER  - 
TY  - JOUR
A1  - Dellmann, Sophia Florence
A1  - Glorius, J.
A1  - Litvinov, Yu A.
A1  - Reifarth, R.
A1  - Al-Khasawneh, Kafa
A1  - Aliotta, M.
A1  - Bott, L.
A1  - Brückner, Benjamin
A1  - Bruno, C. G.
A1  - Chen, Ruijiu
A1  - Davinson, T.
A1  - Dickel, T.
A1  - Dillmann, Iris
A1  - Dmytriev, D.
A1  - Erbacher, P.
A1  - Freire-Fernández, D.
A1  - Forstner, Oliver
A1  - Geissel, H.
A1  - Göbel, K.
A1  - Griffin, Christopher J.
A1  - Grisenti, R.
A1  - Gumberidze, Alexandre
A1  - Haettner, Emma
A1  - Hagmann, Siegbert
A1  - Heil, M.
A1  - Heß, R.
A1  - Hillenbrand, P.-M.
A1  - Joseph, R.
A1  - Jurado, B.
A1  - Kozhuharov, Christophor
A1  - Kulikov, I.
A1  - Löher, Bastian
A1  - Langer, Christoph
A1  - Leckenby, Guy
A1  - Lederer-Woods, C.
A1  - Lestinsky, M.
A1  - Litvinov, S. A.
A1  - Lorenz, B. A.
A1  - Lorenz, E.
A1  - Marsh, J.
A1  - Menz, Esther Babette
A1  - Morgenroth, T.
A1  - Petridis, N.
A1  - Pibernat, Jerome
A1  - Popp, U.
A1  - Psaltis, Athanasios
A1  - Sanjari, Shahab
A1  - Scheidenberger, C.
A1  - Sguazzin, M.
A1  - Sidhu, Ragandeep Singh
A1  - Spillmann, Uwe
A1  - Steck, M.
A1  - Stöhlker, T.
A1  - Surzhykov, A.
A1  - Swartz, J. A.
A1  - Törnqvist, H.
A1  - Varga, L.
A1  - Vescovi, Diego
A1  - Weick, H.
A1  - Weigand, M.
A1  - Woods, P.
A1  - Xing, Y.
A1  - Yamaguchi, Taiyo
T1  - Proton capture on stored radioactive ¹¹⁸Te ions
JF  - EPJ Web of Conferences
N2  - Experimental determination of the cross sections of proton capture on radioactive nuclei is extremely difficult. Therefore, it is of substantial interest for the understanding of the production of the p-nuclei. For the first time, a direct measurement of proton-capture cross sections on stored, radioactive ions became possible in an energy range of interest for nuclear astrophysics. The experiment was performed at the Experimental Storage Ring (ESR) at GSI by making use of a sensitive method to measure (p,γ) and (p,n) reactions in inverse kinematics. These reaction channels are of high relevance for the nucleosyn-thesis processes in supernovae, which are among the most violent explosions in the universe and are not yet well understood. The cross section of the ¹¹⁸Te(p,γ) reaction has been measured at energies of 6 MeV/u and 7 MeV/u. The heavy ions interacted with a hydrogen gas jet target. The radiative recombination process of the fully stripped ¹¹⁸Te ions and electrons from the hydrogen target was used as a luminosity monitor. An overview of the experimental method and preliminary results from the ongoing analysis will be presented.
Y1  - 2023
U6  - https://doi.org/10.1051/epjconf/202327911018
SN  - 2100-014X
N1  - Volume 279, 2023. Nuclear Physics in Astrophysics – X (NPA-X 2022).
VL  - 279
IS  - Article Number: 11018
SP  - 1
EP  - 5
PB  - EDP Sciences
ER  - 
TY  - CHAP
A1  - Atmane, Ilias
A1  - Hirech, Kamal
A1  - Kassmi, K.
A1  - Mahdi, Zahra
A1  - Alexopoulos, Spiros
A1  - Schwarzer, Klemens
A1  - Chayeb, H.
A1  - Bachiri, N.
ED  - Omrane, Amina
ED  - Kassmi, Khalil
ED  - Akram, Muhammad Wasim
ED  - Khanna, Ashish
ED  - Mostafiz, Imtiaz
T1  - Design and realization of a pilot solar desalination plant in Douar El Hamri in the province of Berkane (Morocco)
T2  - Sustainable entrepreneurship, renewable energy-based projects, and digitalization
N2  - Producing fresh water from saline water has become one of the most difficult challenges to overcome especially with the high demand and shortage of fresh water. In this context, as part of a collaboration with Germany, the authors propose a design and implementation of a pilot multi-stage solar desalination system (MSD), remotely controlled, at Douar Al Hamri in the rural town of Boughriba in the province of Berkane, Morocco. More specifically, they present their contribution on the remote control and supervision system, which makes the functioning of the MSD system reliable and guarantees the production of drinking water for the population of Douar. The results obtained show that the electronic cards and computer communication software implemented allow the acquisition of all electrical (currents, voltages, powers, yields), thermal (temperatures of each stage), and meteorological (irradiance and ambient temperature), remote control and maintenance (switching on, off, data transfer). By comparing with the literature carried out in the field of solar energy, the authors conclude that the MSD and electronic desalination systems realized during this work represent a contribution in terms of the reliability and durability of providing drinking water in rural and urban areas.
Y1  - 2020
SN  - 9781000292541 (E-Book)
SN  - 9781003097921 (E-Book)
SN  - 9780367468378 (Hardcover)
PB  - CRC Press
CY  - Boca Raton, Fa.
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Hoffschmidt, Bernhard
T1  - Advances in solar tower technology
JF  - Wiley interdisciplinary reviews : Energy and Environment : WIREs
Y1  - 2017
U6  - https://doi.org/10.1002/wene.217
SN  - 2041-840X
VL  - 6
IS  - 1
SP  - 1
EP  - 19
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - CHAP
A1  - El Moussaoui, Noureddine
A1  - Kassmi, Khalil
A1  - Alexopoulos, Spiros
A1  - Schwarzer, Klemens
A1  - Chayeb, Hamid
A1  - Bachiri, Najib
T1  - Simulation studies on a new innovative design of a hybrid solar distiller MSDH alimented with a thermal and photovoltaic energy
T2  - Materialstoday: Proceedings
N2  - In this paper, we present the structure, the simulation the operation of a multi-stage, hybrid solar desalination system (MSDH), powered by thermal and photovoltaic (PV) (MSDH) energy. The MSDH system consists of a lower basin, eight horizontal stages, a field of four flat thermal collectors with a total area of 8.4 m2, 3 Kw PV panels and solar batteries. During the day the system is heated by thermal energy, and at night by heating resistors, powered by solar batteries. These batteries are charged by the photovoltaic panels during the day. More specifically, during the day and at night, we analyse the temperature of the stages and the production of distilled water according to the solar irradiation intensity and the electric heating power, supplied by the solar batteries. The simulations were carried out in the meteorological conditions of the winter month (February 2020), presenting intensities of irradiance and ambient temperature reaching 824 W/m2 and 23 °C respectively. The results obtained show that during the day the system is heated by the thermal collectors, the temperature of the stages and the quantity of water produced reach 80 °C and 30 Kg respectively. At night, from 6p.m. the system is heated by the electric energy stored in the batteries, the temperature of the stages and the quantity of water produced reach respectively 90 °C and 104 Kg for an electric heating power of 2 Kw. Moreover, when the electric power varies from 1 Kw to 3 Kw the quantity of water produced varies from 92 Kg to 134 Kg. The analysis of these results and their comparison with conventional solar thermal desalination systems shows a clear improvement both in the heating of the stages, by 10%, and in the quantity of water produced by a factor of 3.
Y1  - 2021
U6  - https://doi.org/10.1016/j.matpr.2021.03.115
SN  - 2214-7853
N1  - The Fourth edition of the International Conference on Materials & Environmental Science (ICMES 2020), virtual conference, November 18-28, 2020, Morocco
VL  - 45
IS  - 8
SP  - 7653
EP  - 7660
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Breitbach, Gerd
A1  - Hoffschmidt, Bernhard
A1  - Stobbe, P.
T1  - Computational fluid flow of porous resic ceramic filtering modules and optimization of the channel edge form geometry
JF  - Proceedings : April 14 - 18, 2008, Leipzig, Germany / hosted by VDI, Society for Chemical and Process Engineering . Vol 2
Y1  - 2008
N1  - Verein Deutscher Ingenieure ; World Filtration Congress ; (10 : ; 2008.04.14-18 : ; Leipzig) ; WFC ; (10 : ; 2008.04.14-18 : ; Leipzig)
SP  - 300
EP  - 304
PB  - Filtech Exhibitions
CY  - Meerbusch
ER  - 
TY  - CHAP
A1  - Butenweg, Christoph
ED  - Vacareanu, Radu
ED  - Ionescu, Constantin
T1  - Seismic design and evaluation of industrial facilities
T2  - The Third European Conference on Earthquake Engineering and Seismology
N2  - Industrial facilities must be thoroughly designed to withstand seismic actions as they exhibit an increased loss potential due to the possibly wideranging damage consequences and the valuable process engineering equipment. Past earthquakes showed the social and political consequences of seismic damage to industrial facilities and sensitized the population and politicians worldwide for the possible hazard emanating from industrial facilities. However, a holistic approach for the seismic design of industrial facilities can presently neither be found in national nor in international standards. The introduction of EN 1998-4 of the new generation of Eurocode 8 will improve the normative situation with
specific seismic design rules for silos, tanks and pipelines and secondary process components. The article presents essential aspects of the seismic design of industrial facilities based on the new generation of Eurocode 8 using the example of tank structures and secondary process components. The interaction effects of the process components with the primary structure are illustrated by means of the experimental results of a shaking table test of a three story moment resisting steel frame with different process components. Finally, an integrated approach of
digital plant models based on building information modelling (BIM) and structural health monitoring (SHM) is presented, which provides not only a reliable decision-making basis for operation, maintenance and repair but also an excellent tool for rapid assessment of seismic damage.
KW  - Industrial facilities
KW  - Seismic design
KW  - Tanks
KW  - EN 1998-4
KW  - Structural health monitoring
Y1  - 2022
SN  - 978-3-031-15103-3
SN  - 978-3-031-15106-4
SN  - 978-3-031-15104-0
U6  - https://doi.org/10.1007/978-3-031-15104-0
SN  - 2524-342X
SN  - 2524-3438
N1  - 3ECEES - Third European Conference on Earthquake Engineering and Seismology, September 4 – September 9, 2022, Bucharest
SP  - 449
EP  - 464
PB  - Springer
CY  - Cham
ER  - 
TY  - CHAP
A1  - Kubalski, T.
A1  - Butenweg, Christoph
A1  - Marinković, Marko
A1  - Klinkel, S.
T1  - Investigation Of The Seismic Behaviour Of Infill Masonry Using Numerical Modelling Approaches
T2  - 16th World Conference on Earthquake Engineering, 16WCEE 2017 Santiago Chile, January 9th to 13th 2017
N2  - Masonry is a widely spread construction type which is used all over the world for different types of structures. Due to its simple and cheap construction, it is used as non-structural as well as structural element. In frame structures, such as
reinforced concrete frames, masonry may be used as infill. While the bare frame itself is able to carry the loads when it comes to seismic events, the infilled frame is not able to warp freely due to the constrained movement. This restraint results in a complex interaction between the infill and the surrounding frame, which may lead to severe damage to the infill as well as the surrounding frame. The interaction is studied in different projects and effective approaches for the description of the behavior are still lacking. Experimental programs are usually quite expensive, while numerical models, once validated, do offer an efficient approach for the investigation of the interaction when horizontally loaded. In order to study the numerous parameters influencing the seismic load bearing behavior, numerical models may be used. Therefore, this contribution presents a numerical approach for the simulation of infill masonry in reinforced concrete frames. Both parts, the surrounding frame as well as the infill are represented by micro modelling approaches to correctly take into account the different types of failure. The adopted numerical model describes the inelastic behavior of the system, as indicated by the obtained results of the overall structural response as well as the formation of damage in the infilled wall. Comparison of the numerical and experimental results highlights the valuable contribution of numerical simulations in the study and design of infilled frames. As damage of the infill masonry may occur in-plane due to the interaction as well as out-of-plane due to the low vertical load, both directions of loading are investigated.
Y1  - 2017
N1  - Paper No 3064
SP  - 1
EP  - 11
PB  - Chilean Association on Seismology and Earthquake Engineering (ACHISINA)
ER  - 
TY  - CHAP
A1  - Morandi, Paolo
A1  - Butenweg, Christoph
A1  - Breis, Khaled
A1  - Beyer, Katrin
A1  - Magenes, Guido
ED  - Arion, Christian
ED  - Scupin, Alexandra
ED  - Ţigănescu, Alexandru
T1  - Behaviour factor q for the seismic design of URM buildings
T2  - The Third European Conference on Earthquake Engineering and Seismology
N2  - Recent earthquakes showed that low-rise URM buildings following codecompliant seismic design and details behaved in general very well without substantial damages. Although advances in simulation tools make nonlinear calculation methods more readily accessible to designers, linear analyses will still be the standard design method for years to come. The present paper aims to improve the linear seismic design method by providing a proper definition of the q-factor of URM buildings. Values of q-factors are derived for low-rise URM buildings with rigid diaphragms, with reference to modern structural configurations realized in low to moderate seismic areas of Italy and Germany. The behaviour factor components for deformation and energy dissipation capacity and for overstrength due to the redistribution of forces are derived by means of pushover analyses. As a result of the investigations, rationally based values of the behaviour factor q to be used in linear analyses in the range of 2.0 to 3.0 are proposed.
KW  - unreinforced masonry buildings
KW  - modern constructions
KW  - seismic design
KW  - linear elastic analysis;
KW  - behaviour factor q
Y1  - 2022
SN  - 978-973-100-533-1
N1  - 3ECEES - Third European Conference on Earthquake Engineering and Seismology, September 4 – September 9, 2022, Bucharest
SP  - 1184
EP  - 1194
ER  - 
TY  - CHAP
A1  - Grunendahl, A.
A1  - de Rochefort, E.
A1  - Butenweg, Christoph
T1  - Numerical models for investigating the causes of low back pain due to whole-body vibrations
T2  - 2nd International Conference on Computational Bioengineering : Lisbon, September 14-16 2005. Volume 2.
Y1  - 2005
SN  - 978-972-8469-37-3
SP  - 905
EP  - 914
PB  - IST Press
CY  - Lisbon
ER  - 
TY  - CHAP
A1  - Renault, Philippe
A1  - Butenweg, Christoph
T1  - Seismic vulnerability assessment of bridges
T2  - First Munich Bridge Assessment Conference, MBAC 2005 : Munich, 20.-25. June 2005
Y1  - 2005
SP  - 1
EP  - 16
ER  - 
TY  - CHAP
A1  - Chudoba, Rostislav
A1  - Butenweg, Christoph
A1  - Kuhlmann, Wolfram
T1  - Technical information system for collaborative material research
T2  - Sixth International Conference on Computational Structures Technology : [Prague, Czech Republic, 4 - 6 September 2002]
Y1  - 2002
SP  - 1
EP  - 11
ER  - 
TY  - CHAP
A1  - Edip, Kemal
A1  - Garevski, Mihail
A1  - Butenweg, Christoph
A1  - Sheshov, Vlatko
A1  - Bojadjieva, Julijana
A1  - Gjorgjiev, Igor
T1  - New coupled finite-infinite element approach for wave propagation simulation of unbounded soil media
T2  - 2nd European Conference on Earthquake Engineering and Seismology 2014 (2nd ECEES) : joint event of the 15th European Conference on Earthquake Engineering and the 34th General Assembly of the European Seismological Commission : Istanbul, Turkey, 25-29 August 2014 / European Association for Earthquake Engineering (EAEE) ; Vol. 2
Y1  - 2014
SN  - 978-1-5108-1021-1
SP  - 1556
EP  - 1561
PB  - Curran Associates, Inc.
CY  - Red Hook, NY
ER  - 
TY  - CHAP
A1  - Dalguer, Luis A.
A1  - Churilov, Sergey
A1  - Butenweg, Christoph
A1  - Renault, Philippe
A1  - Hyun, An Jun
T1  - Dynamic analysis of a reinforced concrete electrical nuclear building of SMART 2013 project subjected to earthquake excitation using ABAQUS
T2  - Workshop SMART2013 : Paris, France, November 25th - 27th, 2014
Y1  - 2014
SP  - 1
EP  - 12
ER  - 
TY  - CHAP
A1  - Altay, Okyay
A1  - Butenweg, Christoph
A1  - Klinkel, Sven
A1  - Taddei, Francesca
T1  - Vibration mitigation of wind turbine towers by tuned liquid column dampers
T2  - Proceedings of the 9th European Conference on Structural Dynamics, EURODYN 2014 Porto, Portugal, 30 June - 2 July 2014 / A. Cunha, E. Caetano, .... (eds.)
Y1  - 2014
SN  - 978-972-752-165-4
SP  - 1531
EP  - 1538
CY  - Porto
ER  - 
TY  - JOUR
A1  - Mykoniou, Konstantin
A1  - Butenweg, Christoph
A1  - Holtschoppen, Britta
A1  - Klinkel, Sven
T1  - Seismic response analysis of adjacent liquid-storage tanks
JF  - Earthquake engineering and structural dynamics
N2  - A refined substructure technique in the frequency domain is developed, which permits consideration of the interaction effects among adjacent containers through the supporting deformable soil medium. The tank-liquid systems are represented by means of mechanical models, whereas discrete springs and dashpots stand for the soil beneath the foundations. The proposed model is employed to assess the responses of adjacent circular, cylindrical tanks for harmonic and seismic excitations over wide range of tank proportions and soil conditions. The influence of the number, spatial arrangement of the containers and their distance on the overall system's behavior is addressed. The results indicate that the cross-interaction effects can substantially alter the impulsive components of response of each individual element in a tank farm. The degree of this impact is primarily controlled by the tank proportions and the proximity of the predominant natural frequencies of the shell-liquid-soil systems and the input seismic motion. The group effects should be not a priori disregarded, unless the tanks are founded on shallow soil deposit overlying very stiff material or bedrock.
KW  - liquid-structure interaction
KW  - seismic response
KW  - impulsive effects
KW  - liquid-storage tank
KW  - structure-soil-structure interaction
Y1  - 2016
U6  - https://doi.org/10.1002/eqe.2726
SN  - 1096-9845 (E-Journal); 0098-8847 (Print)
VL  - 45
IS  - 11
SP  - 1779
EP  - 1796
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - CHAP
A1  - Edip, Kemal
A1  - Garevski, Mihail
A1  - Butenweg, Christoph
A1  - Sesov, Vlatko
A1  - Bojadjieva, Julijana
A1  - Gjorgjiev, Igor
T1  - Boundary effects on seismic analysis of multi-storey frames considering soil structure interaction phenomenon
T2  - Seismic design of industrial facilities : proceedings of the International Conference on Seismic Design of Industrial Facilities (SeDIF-Conference) ; [Aachen, 26. - 27. September 2013] / Chair of Structural Statics and Dynamics, RWTH Aachen. Sven Klinkel ..., ed
Y1  - 2014
SN  - 978-3-658-02809-1 (Print) ; 978-3-658-02810-7
U6  - https://doi.org/10.1007/978-3-658-02810-7_47
SP  - 569
EP  - 576
PB  - Springer Vieweg
CY  - Wiesbaden
ER  - 
TY  - CHAP
A1  - Giresini, Linda
A1  - Butenweg, Christoph
A1  - Andreini, M.
A1  - De Falco, A.
A1  - Sassu, M.
T1  - Numerical calibration of a macro-element for vaultes system in historic churches
T2  - 9th International Conference on Structural Analyses of Historical Conctruction, 14 - 17 October, 2014, Mexico City
Y1  - 2014
SP  - 1
EP  - 12
ER  - 
TY  - CHAP
A1  - Rosin, Julia
A1  - Butenweg, Christoph
T1  - Seismic isolation of cylindrical liquid storage tanks
T2  - Proceedings of the 9th European Conference on Structural Dynamics, EURODYN 2014 Porto, Portugal, 30 June - 2 July 2014 / A. Cunha, E. Caetano, .... (eds.)
Y1  - 2014
SN  - 978-972-752-165-4
SP  - 3145
EP  - 3152
CY  - Porto
ER  - 
TY  - CHAP
A1  - Rosin, Julia
A1  - Butenweg, Christoph
A1  - Boesen, Niklas
A1  - Gellert, Christoph
T1  - Evaluation of the Seismic Behavior of a Modern URM Building During the 2012 Northern Italy Earthquakes
T2  - 16th European Conference on Earthquake Engineering, Thessaloniki, 18-21 June, 2018
Y1  - 2018
SP  - 1
EP  - 12
ER  - 
TY  - CHAP
A1  - Altay, Okyay
A1  - Taddei, Francesca
A1  - Butenweg, Christoph
A1  - Klinkel, Sven
T1  - Vibration mitigation of wind turbine towers with tuned mass dampers
T2  - Wind turbine control and monitoring. (Advances in industrial control)
N2  - Because of its minor environmental impact, electricity generation using wind power is getting remarkable. The further growth of the wind industry depends on technological solutions to the challenges in production and construction of the turbines. Wind turbine tower vibrations, which limit power generation efficiency and cause fatigue problems with high maintenance costs, count as one of the main structural difficulties in the wind energy sector. To mitigate tower vibrations auxiliary measures are necessary. The effectiveness of tuned mass damper is verified by means of a numeric study on a 5 MW onshore reference wind turbine. Hereby, also seismic-induced vibrations and soil–structure interaction are considered. Acquired results show that tuned mass damper can effectively reduce resonant tower vibrations and improve the fatigue life of wind turbines. This chapter is also concerned with tuned liquid column damper and a semiactive application of it. Due to its geometric versatility and low prime costs, tuned liquid column dampers are a good alternative to other damping measures, in particular for slender structures like wind turbines.
Y1  - 2014
SN  - 978-3-319-08412-1 (Print) ; 978-3-319-08413-8 (E-Book)
U6  - https://doi.org/10.1007/978-3-319-08413-8_12
SP  - 337
EP  - 373
PB  - Springer
CY  - Cham ; Heidelberg ; New York ; Dordrecht ; London
ER  - 
TY  - CHAP
A1  - Kalker, Ines
A1  - Neumann, M.
A1  - Butenweg, Christoph
A1  - Holler, Stefan
T1  - Modelling of textile strengthened masonry
T2  - Proceedings of the Tenth International Conference on Civil, Structural and Environmental Engineering Computing : [Rome, Italy, 30. August - 2. September 2005] / ed. by B. H. V. Topping
Y1  - 2005
SN  - 1-905088-00-0
U6  - https://doi.org/10.4203/ccp.81.184
SP  - 447
EP  - 448
PB  - Civil-Comp Press
CY  - Stirling
ER  - 
TY  - CHAP
A1  - Karimi, Iman
A1  - Butenweg, Christoph
A1  - Toll, Britta
T1  - Vulnerability assessment of industrial facilities
T2  - Proceedings of the Tenth International Conference on Civil, Structural and Environmental Engineering Computing : [Rome, Italy, 30. August - 2. September 2005] / ed. by B. H. V. Topping
Y1  - 2005
SN  - 1-905088-00-0
U6  - https://doi.org/10.4203/ccp.81.34
SP  - 34, 73
EP  - 75
PB  - Civil-Comp Press
CY  - Stirling
ER  - 
TY  - CHAP
A1  - Mistler, Michael
A1  - Butenweg, Christoph
T1  - A seismic design procedure for masonry buildings
T2  - Proceedings of the Tenth International Conference on Civil, Structural and Environmental Engineering Computing : [Rome, Italy, 30. August - 2. September 2005] / ed. by B. H. V. Topping
Y1  - 2005
SN  - 1-905088-00-0
U6  - https://doi.org/10.4203/ccp.81.193
SP  - 465
EP  - 467
PB  - Civil-Comp Press
CY  - Stirling
ER  - 
TY  - CHAP
A1  - Renault, Philippe
A1  - Butenweg, Christoph
A1  - Mistler, Michael
T1  - Seismic vulnerability assessment system for bridges
T2  - Proceedings of the Tenth International Conference on Civil, Structural and Environmental Engineering Computing : [Rome, Italy, 30. August - 2. September 2005] / ed. by B. H. V. Topping
Y1  - 2005
SN  - 1-905088-00-0
SP  - 1
EP  - 14
PB  - Civil-Comp Press
CY  - Stirling
ER  - 
TY  - CHAP
A1  - Chudoba, Rostislav
A1  - Butenweg, Christoph
A1  - Pfeiffer, Frank
T1  - Textile reinforced concrete. Part I: Process model for collaborative research and development
T2  - Digital proceedings / IKM 2003, proceedings 16th International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering [Elektronische Ressource : 10. - 12. Juni 2003, Weimar] / Bauhaus-Universität Weimar. Ed.: K. Gürlebeck; L. Hempel; C. Könke
Y1  - 2003
SP  - 1
EP  - 8
PB  - IKM
CY  - Weimar
ER  - 
TY  - CHAP
A1  - El-Deib, Khaled
A1  - Chudoba, Rostislav
A1  - Butenweg, Christoph
A1  - Meskouris, Konstantin
A1  - Könke, Carsten
A1  - Bettzieche, Volker
T1  - Safety assessment of rockfill and masonry dams
T2  - Structural dynamics - EURODYN 2002 : proceedings of the 4th [i.e. 5th] International Conference on Structural Dynamics, Munich, Germany, 2 - 5 September 2002 / ed. by H. Grundmann ... Vol. 1
Y1  - 2002
SN  - 90-5809-510-X
SP  - 237
EP  - 242
PB  - Balkema
CY  - Lisse
ER  - 
TY  - CHAP
A1  - Holler, S.
A1  - Butenweg, Christoph
A1  - Noh, S.-Y.
A1  - Meskouris, Konstantin
T1  - Numerical simulation of textile-reinforced concrete structures
T2  - Proceedings of the Sixth International Conference on Computational Structures Technology : [Prague, Czech Republic, 4 - 6 September 2002] / ed. by B. H. V. Topping and Z. Bittnar. (Civil-Comp Press books on computational engineering)
Y1  - 2002
SN  - 0-948749-83-0
SP  - 287
EP  - 288
PB  - Civil-Comp Press
CY  - Stirling
ER  - 
TY  - JOUR
A1  - Taddei, Francesca
A1  - Butenweg, Christoph
A1  - Klinkel, S.
T1  - Parametric investigation of the soil-structure interaction effects on the dynamic behaviour of a shallow foundation supported wind turbine considering a layered soil
JF  - Wind energy : an international journal for progress and applications in wind power conversion technology
Y1  - 2015
U6  - https://doi.org/10.1002/we.1703
SN  - 1099-1824 (E-Journal); 1095-4244 (Print)
VL  - Volume 18
IS  - Issue 3
SP  - 399
EP  - 417
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - CHAP
A1  - Butenweg, Christoph
A1  - Thierauf, Georg
T1  - Optimum cost design of reinforced concrete structures using parallel computing
T2  - Advances in computational mechanics with parallel and distributed processing : research papers presented at The First Euro-Conference on Parallel and Distributed Computing for Computational Mechanics, held at Lochinver, Scotland, between 26 April and 1 May 1997 / ed. by B. H. V. Topping
Y1  - 1997
SN  - 0-948749-47-4
SP  - 197
EP  - 202
PB  - Saxe-Coburg Publication
CY  - Edinburgh
ER  - 
TY  - CHAP
A1  - Butenweg, Christoph
A1  - Thierauf, Georg
T1  - Optimum design of reinforced concrete structures
T2  - Advances in computational structural mechanics : this volume contains a selection of papers presented at The First International Conference on Engineering Computational Technology and The Fourth International Conference on Computational Structures Technology, held in Edinburgh from 18-21 August 1998 / edited by B. H. V. Topping
Y1  - 1998
SN  - 0-948749-57-1
SP  - 447
EP  - 458
PB  - Civil-Comp Press
CY  - Edinburgh
ER  - 
TY  - CHAP
A1  - Rochefort, E. de
A1  - Verver, M.
A1  - Grunendahl, A.
A1  - Mooi, H.
A1  - Butenweg, Christoph
T1  - Detailed modelling of the lumbar spine for investigation of low back pain
T2  - Digital Human Modeling for Design and Engineering Symposium : Iowa City, Iowa June 14-16, 2005. (SAE technical papers series ; 2005-1-2716)
Y1  - 2005
U6  - https://doi.org/10.4271/2005-01-2716
SN  - 0096-736X
SP  - 1
EP  - 11
PB  - SAE International
CY  - Warrendale, Pa.
ER  - 
TY  - JOUR
A1  - Holler, S.
A1  - Butenweg, Christoph
A1  - Noh, S.-Y.
A1  - Meskouris, Konstantin
T1  - Computational model of textile-reinforced concrete structures
JF  - Computers & structures : an international journal
Y1  - 2004
U6  - https://doi.org/10.1016/j.compstruc.2004.03.076
SN  - 1879-2243 (E-Journal); 0045-7949 (Print)
VL  - Volume 82
IS  - Issues 23-26
SP  - 1971
EP  - 1979
ER  - 
TY  - JOUR
A1  - Mistler, Michael
A1  - Butenweg, Christoph
A1  - Meskouris, Konstantin
T1  - Modelling methods of historic masonry buildings under seismic excitation
JF  - Journal of seismology
Y1  - 2006
U6  - https://doi.org/10.1007/s10950-006-9033-z
SN  - 1383-4649 (Print) ; 1573-157X (E-Journal)
VL  - Volume 10
IS  - No. 4
SP  - 497
EP  - 510
ER  - 
TY  - JOUR
A1  - Mistler, Michael
A1  - Anthoine, A.
A1  - Butenweg, Christoph
T1  - In-plane and out-of-plane homogenisation of masonry
JF  - Computers & structures
Y1  - 2007
U6  - https://doi.org/10.1016/j.compstruc.2006.08.087
SN  - 1879-2243 (E-Journal); 0045-7949 (Print)
VL  - Volume 85
IS  - Issues 17-18
SP  - 1321
EP  - 1330
ER  - 
TY  - CHAP
A1  - Schmitt, Timo
A1  - Rosin, Julia
A1  - Butenweg, Christoph
T1  - Seismic Impact And Design Of Buried Pipelines
T2  - 16th European Conference on Earthquake Engineering, Thessaloniki, 18-21 June, 2018
N2  - Seismic design of buried pipeline systems for energy and water supply is not only important for plant and operational safety but also for the maintenance of the supply infrastructure after an earthquake. The present paper shows special issues of the seismic wave impacts on buried pipelines, describes calculation methods, proposes approaches and gives calculation examples. This paper regards the effects of transient displacement differences and resulting tensions within the pipeline due to the wave propagation of the earthquake. However, the presented model can also be used to calculate fault rupture induced displacements. Based on a three-dimensional Finite Element Model parameter studies are performed to show the influence of several parameters such as incoming wave angle, wave velocity, backfill height and synthetic displacement time histories. The interaction between the pipeline and the surrounding soil is modeled with non-linear soil springs and the propagating wave is simulated affecting the pipeline punctually, independently in time and space. Special attention is given to long-distance heat pipeline systems. Here, in regular distances expansion bends are arranged to ensure movements of the pipeline due to high temperature. Such expansion bends are usually designed with small bending radii, which during the earthquake lead to high bending stresses in the cross-section of the pipeline. Finally, an interpretation of the results and recommendations are given for the most critical parameters.
Y1  - 2018
N1  - Paper No 10600
SP  - 1
EP  - 12
ER  - 
TY  - CHAP
A1  - Rajan, S.
A1  - Butenweg, Christoph
A1  - Dalguer, L. A.
A1  - An, J. H.
A1  - Renault, P.
A1  - Klinkel, S.
T1  - Fragility curves for a three-storey reinforced concrete test structure of the international benchmark SMART 2013
T2  - 16th World Conference on Earthquake, 16WCEE 2017 Santiago Chile, January 9th to 13th 2017
Y1  - 2017
N1  - Paper No 2119
PB  - Chilean Association on Seismology and Earthquake Engineering (ACHISINA)
ER  - 
TY  - BOOK
A1  - Klinkel, Sven
A1  - Butenweg, Christoph
A1  - Lin, Gao
A1  - Holtschoppen, Britta
T1  - Seismic design of industrial facilities : Proceedings of the International Conference on Seismic Design of Industrial Facilities (SeDIF) /  Sven Klinkel, Christoph Butenweg, Gao Lin, Britta Holtschoppen Editors
Y1  - 2014
SN  - 978-3-658-02809-1 (Print) ; 978-365-80281-0-7 (E-Book)
U6  - https://doi.org/10.1007/978-3-658-02810-7
PB  - Springer Vieweg
CY  - Wiesbaden
ER  - 
TY  - CHAP
A1  - Butenweg, Christoph
A1  - Marinkovic, Marko
A1  - Fehling, Ekkehard
A1  - Pfetzing, Thomas
A1  - Kubalski, Thomas
T1  - Experimental and Numerical Investigations of Reinforced Concrete Frames with Masonry Infills under Combined In- and Out-of-plane Seismic Loading
T2  - 16th European Conference on Earthquake Engineering, Thessaloniki, 18-21 June, 2018
Y1  - 2018
N1  - Paper No 11477
SP  - 1
EP  - 12
ER  - 
TY  - RPRT
A1  - Butenweg, Christoph
A1  - Kaiser, Diethelm
T1  - Seismic hazard harmonisation in Europe (SHARE) : DGEB-Workshop in Frankfurt a.M., Germany, 27. May 2014 / Christoph Butenweg, Diethelm Kaiser (editors)
Y1  - 2014
SN  - 3-930108-12-7
PB  - DGEB
CY  - Aachen
ER  - 
TY  - CHAP
A1  - Milkova, Kristina
A1  - Rosin, Julia
A1  - Butenweg, Christoph
A1  - Dumova-Jovanoska, Elena
T1  - Development of Seismic Vulnerability Curves for Region Specific Masonry Buildings
T2  - 16th European Conference on Earthquake Engineering, Thessaloniki, 18-21 June, 2018
Y1  - 2018
N1  - Paper No 10522
SP  - 1
EP  - 10
ER  - 
TY  - CHAP
A1  - Michel, Philipp
A1  - Butenweg, Christoph
A1  - Klinkel, Sven
T1  - Frequency Dependent Impedance Analysis of the Foundation-Soil-Systems of Onshore Wind Turbines
T2  - 16th European Conference on Earthquake Engineering, Thessaloniki, 18-21 June, 2018
Y1  - 2018
N1  - Paper No 11440
SP  - 1
EP  - 13
ER  - 
TY  - CHAP
A1  - Rosin, J.
A1  - Mykoniou, K.
A1  - Butenweg, Christoph
T1  - Analysis Of Base Isolated Liquid Storage Tanks With 3D Fsi-Analysis As Well As Simplified Approaches
T2  - 16th World Conference on Earthquake Engineering, 16WCEE 2017 Santiago Chile, January 9th to 13th 2017
N2  - Tanks are preferably designed, for cost-saving reasons, as circular, cylindrical, thin-walled shells. In case of seismic excitation, these constructions are highly vulnerable to stability failures. An earthquake-resistant design of rigidly supported tanks for high seismic loading demands, however, uneconomic wall thicknesses. A cost-effective alternative can be provided by base isolation systems. In this paper, a simplified seismic design procedure for base isolated tanks is introduced, by appropriately modifying the standard mechanical model for flexible, rigidly supported tanks. The non-linear behavior of conventional base isolation systems becomes an integral part of a proposed simplified process, which enables
the assessment of the reduced hydrodynamic forces acting on the tank walls and the corresponding stress distribution. The impulsive and convective actions of the liquid are taken into account. The validity of this approach is evaluated by
employing a non-linear fluid-structure interaction algorithm of finite element method. Special focus is placed on the boundary conditions imposed from the base isolation and the resulting hydrodynamic pressures. Both horizontal and vertical
component of ground motion are considered in order to study the principal effects of the base isolation on the pressure distribution of the tank walls. The induced rocking effects associated with elastomeric bearings are discussed. The results
manifest that base isolated tanks can be designed for seismic loads by means of the proposed procedure with sufficient accuracy, allowing to dispense with numerically expensive techniques.
KW  - liquid storage tank
KW  - seismic isolation
KW  - elastomeric bearing
KW  - friction pendulum bearing
KW  - simplified approach
Y1  - 2017
N1  - Paper No 2246
SP  - 1
EP  - 14
PB  - Chilean Association on Seismology and Earthquake Engineering (ACHISINA)
ER  -