Refine
Year of publication
Document Type
- Article (608)
- Conference Proceeding (259)
- Book (125)
- Part of a Book (83)
- Doctoral Thesis (10)
- Report (7)
- Other (4)
- Talk (3)
- Diploma Thesis (2)
- Contribution to a Periodical (1)
- Master's Thesis (1)
- Poster (1)
Language
- English (579)
- German (522)
- Multiple languages (1)
- nld (1)
- Spanish (1)
Keywords
- Blitzschutz (18)
- Lightning protection (11)
- Earthquake (5)
- Diversity Management (4)
- Energy storage (4)
- Power plants (4)
- Risikomanagement (4)
- Seismic design (4)
- reinforced concrete (4)
- Associated liquids (3)
- Concentrated solar power (3)
- Elektromagnetischer Schutzschild (3)
- Hybrid energy system (3)
- INODIS (3)
- Lightning (3)
- Out-of-plane load (3)
- Risikoabschätzung (3)
- Risk management (3)
- Seismic loading (3)
- Stahlbetonkonstruktion (3)
- earthquakes (3)
- renewable energy (3)
- Adjacent buildings (2)
- Central receiver power plant (2)
- Concentrated systems (2)
- Direkter Blitzschlag (2)
- Diversity (2)
- Electricity generation (2)
- Energierecht (2)
- Engineering Habitus (2)
- Erneuerbare Energien (2)
- Gas turbine (2)
- Gasturbine (2)
- Historical centres (2)
- Human-robot collaboration (2)
- Hybridsystem (2)
- INSYSME (2)
- Induzierte Spannungen (2)
- Innovation Management (2)
- Lightning Protection (2)
- Lightning protection system (2)
- Magnetische Felder (2)
- Masonry infill (2)
- Micro turbine (2)
- Mikrogasturbine (2)
- Organizational Culture (2)
- Regenerative Energieanlagen (2)
- Renewable energy (2)
- Risikoabwägung (2)
- Risk assessment (2)
- Shake table test (2)
- Solar thermal technologies (2)
- Stone masonry (2)
- Tanks (2)
- cyber physical production system (2)
- digital shadow (2)
- electromagnetic shielding (2)
- engineering education (2)
- hybrid system (2)
- industrial facilities (2)
- installations (2)
- photovoltaic system (2)
- piping (2)
- seismic design (2)
- seismic loading (2)
- wind turbine (2)
- Academia (1)
- Acceptance (1)
- Algal Turf Scrubber (1)
- Algal–bacterial bioflm (1)
- Alternative Energiequelle (1)
- Anti-Bias (1)
- Antibias (1)
- Artificial intelligence (1)
- Ausfachungsmauerwerk (1)
- BIM (1)
- Basisisolierung (1)
- Bauwerksüberwachung (1)
- Behaviour factor q (1)
- Bemessung (1)
- Best practice sharing (1)
- Biogas (1)
- Blind prediction competition (1)
- Blitz (1)
- Blitzeinschlag (1)
- Blitzrisiko (1)
- Blitzschlag (1)
- Bloom Taxonomy (1)
- COMSOL Multiphysics (1)
- Camera system (1)
- Capacity Curve (1)
- Cardiovascular MRI (1)
- Central receiver system (1)
- Ceramics (1)
- Change Management (1)
- Change management (1)
- Circular bioeconomy (1)
- Civil engineering (1)
- Cloud passages (1)
- Cognitive assistance system (1)
- Components (1)
- Concentrated solar collector (1)
- Concentrating solar power (1)
- Control optimization (1)
- Corporate Culture (1)
- DIN EN 1996 (1)
- DNI forecast (1)
- DNI forecasting (1)
- Decision theory (1)
- Decoupling (1)
- Design Thinking (1)
- Design examples (1)
- Digital leadership (1)
- Digitalization (1)
- Direct lightning strike (1)
- Direct normal irradiance forecast (1)
- District data model (1)
- District energy planning platform (1)
- Diversity management (1)
- Dynamic simulation (1)
- EN 1998-4 (1)
- ESHM20, industrial facilities (1)
- Earthquake Engineering (1)
- Electrochemistry (1)
- Elektrizität (1)
- Elektromagnetische Kopplung (1)
- Emilia-Romagna earthquake (1)
- Emissionshandel (1)
- Emissionsrechtehandel (1)
- Empirical consequence curves (1)
- Empirical fragility functions (1)
- Energiekonzept (1)
- Energietechnik (1)
- Energietechnische Anlage (1)
- Energy (1)
- Energy Systems (1)
- Energy system (1)
- Energy system planning (1)
- Engineering (1)
- Engineering Education (1)
- Erdbeben (1)
- Erdbebeneinwirkung (1)
- Erneuerbares Energiengesetz (1)
- Ethics (1)
- Eurocode 8 (1)
- Fernerkundung (1)
- Feuchtigkeit (1)
- Fracture classification (1)
- Frame structure (1)
- Fresnel power plant (1)
- Future Skills (1)
- Future skills (1)
- Gas (1)
- Gender (1)
- Genetic algorithm (1)
- Gesamtwassergehalt (1)
- Global change (1)
- Gust wind response (1)
- Heliostat Field Calibration (1)
- Heliostats (1)
- Higher Education (1)
- Hilbert Room (1)
- Human factors (1)
- Human-centered work design (1)
- Hybridanlage (1)
- Hybridization (1)
- Imaging (1)
- In- plane damage (1)
- In-plane (1)
- In-plane load (1)
- In-plane performance, isolation (1)
- Inclusive work climate (1)
- Industrial facilities (1)
- Industrial units (1)
- Industrieanlagen (1)
- Infill wall design (1)
- Infrarot-Reflexions-Absorptions-Spektroskopie (1)
- Infrarotmesstechnik (1)
- Innovation (1)
- Interaction (1)
- Interculturality (1)
- Interdisciplinarity (1)
- Isolation (1)
- Kalkulation (1)
- Kernenergie (1)
- Key competences (1)
- Kraftwerke (1)
- Leadership (1)
- Left ventriular function (1)
- Lightning Risk (1)
- Linear elastic analysis (1)
- LiveLink for MATLAB (1)
- MIR-Spektroskopie (1)
- MR-stethoscope (1)
- Magnetic field strength (1)
- Magnetic resonance imaging (MRI) (1)
- Masonry partition walls (1)
- Masonry structures (1)
- Mauerwerksbauten (1)
- Mauerwerksgebäude (1)
- Maßstabsgetreues Modell (1)
- Measuring instruments (1)
- Methane (1)
- Mixed integer linear programming (MILP) (1)
- Modern constructions (1)
- Molten salt receiver (1)
- Molten salt receiver system (1)
- Molten salt receiver system, (1)
- Molten salt solar tower (1)
- Momentenverteilung (1)
- Monitoring (1)
- Monte Carlo Tree Search (1)
- Morphing (1)
- Multi-storey (1)
- Neo-Deterministic (1)
- Nowcasting (1)
- Nuclear Applications (1)
- Numerical modelling (1)
- Operators (1)
- Optimization module (1)
- Organizational culture (1)
- Out-of-plane (1)
- Out-of-plane capacity (1)
- Out-of-plane failure (1)
- Out-of-plane strength (1)
- PBEE (1)
- PTC (1)
- Parabolic trough collector (1)
- Perception (1)
- Photovoltaics (1)
- Photovoltaikanlage (1)
- Photovoltaikanlagen (1)
- Piping (1)
- Postulates (1)
- Power conversion systems (1)
- Precast buildings (1)
- Privacy (1)
- Probability distribution mapping (1)
- Process prediction (1)
- Psychological concepts (1)
- Pushover analysis (1)
- PushoverAnalysen (1)
- Pyrometrie (1)
- Quadrocopter (1)
- Quantenkaskadenlaser (1)
- Quantenmechanik (1)
- RC frames (1)
- Rahmentragwirkung (1)
- Reinforced concrete frame (1)
- Renewable energy integration (1)
- Response spectrum (1)
- Responsibility (1)
- Risiko (1)
- Risk (1)
- Risk Assessment (1)
- Risk Management (1)
- Risk assessment ; Insurance (1)
- Schrödingers cat (1)
- Seismic (1)
- Seismic Hazard (1)
- Sensor (1)
- Shoulder (1)
- Silos (1)
- Slab deflection (1)
- Social impact measurement (1)
- Solar concentration (1)
- Solar dish (1)
- Solar irradiance (1)
- Speckle (1)
- Spectral analysis (1)
- Stahlbeton (1)
- Stahlbetonrahmen (1)
- Star design (1)
- Structural design (1)
- Structural health monitoring (1)
- Sustainability (1)
- Sustainable engineering education (1)
- Tank (1)
- Temperaturmessung (1)
- Thermal Energy Storage (1)
- Time-series aggregation (1)
- Transient flux distribution (1)
- Trinitrotol (1)
- Two-phase modelling (1)
- Typical periods (1)
- UAV (1)
- Umwelt (1)
- Umweltzertifikathandel (1)
- Uncertainty analysis (1)
- Unmanned aerial vehicle (1)
- Unreinforced masonry buildings (1)
- Unreinforced masonry walls (1)
- Verdunstungskälte (1)
- Verhaltensbeiwerte (1)
- Versicherung (1)
- Virtuelle Kraftwerke (1)
- Vulnerability Curves (1)
- Wand-Decken-Interaktion (1)
- Wind turbulence (1)
- Windenergieanlage (1)
- Windenergieanlagen (1)
- Window opening (1)
- Ziegelmauerwerk (1)
- acoustic pyrometry (1)
- behaviour factor q (1)
- best practice (1)
- bio-methane (1)
- body limbs (1)
- bubble column (1)
- bullying (1)
- calculations (1)
- cardiac gating (1)
- cardiovascular MR imaging (1)
- change management (1)
- churches (1)
- concentrating collector (1)
- connection detail (1)
- current distribution (1)
- cyber-physical production system (1)
- deserts (1)
- digital twin (1)
- digitalization (1)
- dissemination (1)
- distribution grid simulation (1)
- diversity (1)
- diversity management (1)
- down-conductor (1)
- e-mobility (1)
- early warning and response system (1)
- earthquake (1)
- earthquake engineering (1)
- education (1)
- elastomeric bearing (1)
- electrocardiogram (1)
- electromagnetic coupling (1)
- electromagnetic shield (1)
- energy concept (1)
- energy transition (1)
- engineering (1)
- environment (1)
- equivalent stiffness (1)
- finite element method (1)
- flue gas components (1)
- fluid structure interaction (1)
- fragility curves (1)
- friction pendulum bearing (1)
- gender and diversity (1)
- granular silo (1)
- high field MR imaging (1)
- human digital shadow (1)
- human factors (1)
- human-machine interface (1)
- hybrid-system (1)
- hypoplasticity (1)
- impulsive effects (1)
- in-plane (1)
- in-plane and out-of-plane failure (1)
- in-plane behaviour (1)
- induced voltage (1)
- induced voltages (1)
- innovation (1)
- innovation management (1)
- integration SHM in BIM (1)
- interconnected sensor systems (1)
- internet of production (1)
- lessons learned (1)
- lightning flash (1)
- lightning protection (1)
- lightning strike (1)
- linear elastic analysis; (1)
- liquid storage tank (1)
- liquid-storage tank (1)
- liquid-structure interaction (1)
- lizards (1)
- macro-element (1)
- magnetic field (1)
- magnetic fields (1)
- magnetic resonance imaging (1)
- masonry infill (1)
- masonry structures (1)
- metal façade (1)
- methanation (1)
- modern constructions (1)
- nonlinear transient analyses (1)
- open educational resources (1)
- out-of-plane (1)
- out-of-plane behaviour (1)
- overvoltages (1)
- phonocardiogram (1)
- plug flow reactor (1)
- point-focussing system (1)
- policy recommendations (1)
- power-to-gas (1)
- protection measures (1)
- raytracing (1)
- recommendations for actions (1)
- renewable energies (1)
- research association (1)
- risk assessment (1)
- risk management (1)
- safety control (1)
- scaled model (1)
- seismic (1)
- seismic hazard (1)
- seismic isolation (1)
- seismic response (1)
- seismic risk (1)
- seismic structural damage detection via SHM (1)
- seismic vulnerability (1)
- simplified approach (1)
- smart-charging (1)
- social responsible engineering (1)
- solar process heat (1)
- steam production (1)
- steel columns (1)
- storage dispatch (1)
- storage optimisation (1)
- structure-soil-structure interaction (1)
- swimming (1)
- teaching (1)
- temperature measurement (1)
- thermal storage (1)
- touch voltage (1)
- truss (1)
- unreinforced masonry buildings (1)
- user & usage (1)
- vault (1)
- vocal fold oscillation (1)
- Überspannung (1)
Institute
- Fachbereich Energietechnik (1104) (remove)
Analysis Of Base Isolated Liquid Storage Tanks With 3D Fsi-Analysis As Well As Simplified Approaches
(2017)
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.
Silos generally work as storage structures between supply and demand for various goods, and their structural safety has long been of interest to the civil engineering profession. This is especially true for dynamically loaded silos, e.g., in case of seismic excitation. Particularly thin-walled cylindrical silos are highly vulnerable to seismic induced pressures, which can cause critical buckling phenomena of the silo shell. The analysis of silos can be carried out in two different ways. In the first, the seismic loading is modeled through statically equivalent loads acting on the shell. Alternatively, a time history analysis might be carried out, in which nonlinear phenomena due to the filling as well as the interaction between the shell and the granular material are taken into account. The paper presents a comparison of these approaches. The model used for the nonlinear time history analysis considers the granular material by means of the intergranular strain approach for hypoplasticity theory. The interaction effects between the granular material and the shell is represented by contact elements. Additionally, soil–structure interaction effects are taken into account.
Anwendung von AlN- bzw. AlN-Al2O3-Mischungen als Festelektrolyt in Eisenschmelzen bei 1640° C
(1977)
Often, detailed simulations of heat conduction in complicated, porous media have large runtimes. Then homogenization is a powerful tool to speed up the calculations by preserving accurate solutions at the same time. Unfortunately real structures are generally non-periodic, which requires unpractical, complicated homogenization techniques. We demonstrate in this paper, that the application of simple, periodic techniques to realistic media, that are just close to periodic, gives accurate, approximative solutions. In order to obtain effective parameters for the homogenized heat equation, we have to solve a so called “cell problem”. In contrast to periodic structures it is not trivial to determine a suitable unit cell, which represents a non-periodic media. To overcome this problem, we give a rule of thumb on how to choose a good cell. Finally we demonstrate the efficiency of our method for virtually generated foams as well as real foams and compare these results to periodic structures.
The paper deals with the development of the probabilistic approach to the assessment of risk due to lightning. Sources of damage, types of damage and types of loss are defined and, accordingly, the procedure for risk analysis and the way of assessment of different risk components is proposed. The way to evaluate the influence of different protection measures (lightning protection system; shielding of structure, cables and equipment; routing of internal wiring; surge protective device) in reducing such probabilities is considered. The paper has been prepared within the framework of the activity of IEC TC81-WG9/CLC TC81-WG4 directed to prepare the draft IEC 62305-2 Risk Management, in cooperation with the Secretary of IEC/CLC TC81.
Arsenic passivation of MOMBE grown GaAs surfaces / B. -J. Schäfer ; A. Förster ; M. Londschien ...
(1988)
Large industrial facilities and power plants often require a huge number fo information and control cables between the differnet structures. These I&C-cables can be routed in reinforced concrete cable ducts or in isolated buried cable runs. KTA 2206 is the German lightning protection standard for nuclear power plants. During the last several years considerable effort has been made to revise this standard. Despite the well established principles and design guidelines for the construction of the lightning protection system, this standard puts special emphasis on the coupling of transient overvoltages to I&C-cables.
Aufbau von Handelseinheiten
(2012)
Ausblick: Der individualitätsbezogene Diversity Management-Ansatz als Antwort auf Individualisierung
(2015)
Der Megatrend Individualisierung fordert von Unternehmen, ihre Strategien und Prozessabläufe bei zunehmender Globalisierung grundlegend zu überdenken. Während Strategien und Prozessabläufe im Unternehmen Standards unterliegen, entwickelt sich unsere Gesellschaft immer stärker zu einem individuumszentrierten System, in dem es gilt, Werte und Lebensstile der Individuen zu berücksichtigen und derart wertzuschätzen, dass Mitarbeitende motiviert und mit hoher Bindung an das Unternehmen die anstehenden Leistungen für das Unternehmen erbringen. Im Konzept DiM sind Standardisierung und Individualisierung keine gegensätzlichen Aspekte, da bei DiM neben der Betrachtung des betriebswirtschaftlichen Nutzens dieses Konzepts für Unternehmen die Wertschätzung des Individuums als genuines Merkmal betont wird.
Stahlbetonrahmentragwerke mit Ausfachungen aus Mauerwerk weisen nach Erdbeben häufig schwere Schäden auf. Gründe hierfür sind die Beanspruchungen der Ausfachungswände durch die aufgezwungenen Rahmenverformungen in Wandebene und die gleichzeitig auftretenden Trägheitskräfte senkrecht zur Wandebene in Kombination mit der konstruktiven Ausführung des Ausfachungsmauerwerks. Die Ausfachung wird in der Regel knirsch gegen die Rahmenstützen gemauert, wobei der Verschluss der oberen Fuge mit Mörtel oder Montageschaum erfolgt. Dadurch kommt es im Erdbebenfall zu lokalen Interaktionen zwischen Ausfachung und Rahmen, die in der Folge zu einem Versagen einzelner Ausfachungswände oder zu einem sukzessiven Versagen des Gesamtgebäudes führen können. Die beobachteten Schäden waren die Motivation dafür, in dem europäischen Forschungsprojekt INSYSME für Stahlbetonrahmentragwerke mit Ausfachungen aus hochwärmedämmenden Ziegelmauerwerk innovative Lösungen zur Verbesserung des seismischen Verhaltens zu entwickeln. Der vorliegende Beitrag stellt die im Rahmen des Projekts von den deutschen Projektpartnern (Universität Kassel, SDA-engineering GmbH) entwickelten Lösungen vor und vergleicht deren seismisches Verhalten mit der traditionellen Ausführung der Ausfachungswände. Grundlage für den Vergleich sind statisch-zyklische Wandversuche und Simulationen auf Wandebene. Aus den Ergebnissen werden Empfehlungen für die erdbebensichere Auslegung von Stahlbetonrahmentragwerken mit Ausfachungen aus Ziegelmauerwerk abgeleitet.
Im Rahmen des europäischen Verbundprojekts INSYSME wurden von den deutschen Partnern die Systeme IMES und INODIS zur Verbesserung des seismischen Verhaltens von ausgefachten Stahlbetonrahmen entwickelt. Ziel beider Systeme ist es, Stahlbetonrahmen und Ausfachung zu entkoppeln, anstatt die Tragfähigkeit durch aufwendige und kostspielige zusätzliche Bewehrungseinlagen zu erhöhen. Erste Ergebnisse des Systems IMES für Belastungen in und senkrecht zu der Wandebene werden vorgestellt.
Im Rahmen des europäischen Verbundprojekts INSYSME wurden von den deutschen Partnern die Systeme IMES und INODIS zur Verbesserung des seismischen Verhaltens von ausgefachten Stahlbetonrahmen entwickelt. Ziel beider Systeme ist es, Stahlbetonrahmen und Ausfachung zu entkoppeln, anstatt die Tragfähigkeit durch aufwendige und kostspielige zusätzliche Bewehrungseinlagen zu erhöhen. Erste Ergebnisse des Systems IMES für Belastungen in und senkrecht zu der Wandebene werden vorgestellt.
A concept for the analysis and optimal design of reinforced concrete structures is described. It is based on a nonlinear optimization algorithm and a finite element program for linear and nonlinear analysis of structures. With the aim of minimal cost design a two stage optimization using efficient gradient algorithm is developed. The optimization problems on global (structural) and local (crosssectional) level are formulated. A parallelization concept for solving the two stage optimization problem in minimal time is presented. Examples are included to illustrate the practical use and the effectively of the parallelization in the area of engineering design.