TY - CHAP A1 - Rosin, Julia A1 - Kubalski, Thomas A1 - Butenweg, Christoph ED - Klinkel, Sven ED - Butenweg, Christoph ED - Lin, Gao ED - Holtschoppen, Britta T1 - Seismic isolation of cylindrical liquid storage tanks T2 - Seismic design of industrial facilities N2 - Seismic excited liquid filled tanks are subjected to extreme loading due to hydrodynamic pressures, which can lead to nonlinear stability failure of the thinwalled cylindrical tanks, as it is known from past earthquakes. A significant reduction of the seismically induced loads can be obtained by the application of base isolation systems, which have to be designed carefully with respect to the modified hydrodynamic behaviour of the tank in interaction with the liquid. For this reason a highly sophisticated fluid-structure interaction model has to be applied for a realistic simulation of the overall dynamic system. In the following, such a model is presented and compared with the results of simplified mathematical models for rigidly supported tanks. Finally, it is examined to what extent a simple mechanical model can represent the behaviour of a base isolated tank in case of seismic excitation Y1 - 2013 SN - 978-3-658-02810-7 SN - 978-3-658-02809-1 SN - 978-3-658-14037-3 U6 - https://doi.org/10.1007/978-3-658-02810-7_36 N1 - International Conference on Seismic Design of Industrial Facilities, Aachen, Germany, 26.-27.09.2013. https://sedif-conference.jimdofree.com/ SP - 429 EP - 440 PB - Springer Vieweg CY - Wiesbaden ER - TY - CHAP A1 - Butenweg, Christoph A1 - Rajan, Sreelakshmy T1 - Design and construction techniques of AAC masonry buildings in earthquakes regions T2 - 10 years Xella research in Building Materials : Symposium on the 4th and 5th of September, Potsdam 2014 Y1 - 2014 ER - TY - CHAP A1 - Butenweg, Christoph A1 - Meyer, Udo A1 - Fehling, Ekkehard T1 - INSYSME: first activities of the German partners T2 - 9th International Masonry Conference 2014 in Guimaraes, Portugal, 2014 Y1 - 2014 ER - TY - CHAP A1 - Boesen, Niklas A1 - Rosin, Julia A1 - Butenweg, Christoph A1 - Deichsel, Anne A1 - Klinkel, Sven ED - Zabel, Volkmar ED - Beinersdorf, Silke T1 - Untersuchung vorhandenerTragreserven moderner unbewehrter Mauerwerksbauten T2 - Vortragsband der 15. D-A-CH-Tagung Erdbebeningenieurwesen und Baudynamik Y1 - 2017 SN - 978-3-930108-13-5 N1 - 21.-22. September 2017, Weimar. ISBN laut DNB falsch SP - 408 EP - 418 PB - Deutsche Gesellschaft für Erdbebeningenieurwesen und Baudynamik (DGEB) e.V. CY - Weimar ER - TY - CHAP A1 - Butenweg, Christoph A1 - Marinković, Marko A1 - Kubalski, Thomas A1 - Fehling, Ekkehard A1 - Pfetzing, Thomas A1 - Meyer, Udo ED - Zabel, Volkmar ED - Beinersdorf, Silke T1 - Innovative Ansätze für die seismische Auslegung von Stahlbetonrahmentragwerken mit Ausfachungen aus Ziegelmauerwerk T2 - Vortragsband der 15. D-A-CH-Tagung Erdbebeningenieurwesen und Baudynamik KW - Stahlbetonrahmen KW - Ausfachungsmauerwerk KW - INSYSME KW - Erdbeben KW - Ziegelmauerwerk Y1 - 2017 SN - 978-3-930108-13-5 SP - 130 EP - 145 PB - Deutsche Gesellschaft für Erdbebeningenieurwesen und Baudynamik (DGEB) e.V. CY - Weimar ER - TY - CHAP A1 - Walter, Peter A1 - Elsen, Ingo A1 - Müller, Holger A1 - Kraiss, Karl-Friedrich T1 - 3D object recognition with a specialized mixtures of experts architecture T2 - IJCNN'99. International Joint Conference on Neural Networks. Proceedings N2 - Aim of the AXON2 project (Adaptive Expert System for Object Recogniton using Neuml Networks) is the development of an object recognition system (ORS) capable of recognizing isolated 3d objects from arbitrary views. Commonly, classification is based on a single feature extracted from the original image. Here we present an architecture adapted from the Mixtures of Eaqerts algorithm which uses multiple neuml networks to integmte different features. During tmining each neural network specializes in a subset of objects or object views appropriate to the properties of the corresponding feature space. In recognition mode the system dynamically chooses the most relevant features and combines them with maximum eficiency. The remaining less relevant features arz not computed and do therefore not decelerate the-recognition process. Thus, the algorithm is well suited for ml-time applications. Y1 - 1999 SN - 0-7803-5529-6 U6 - https://doi.org/10.1109/IJCNN.1999.836243 SN - 1098-7576 N1 - Washington, DC 10-16.07.1999 SP - 3563 EP - 3568 PB - IEEE CY - New York ER - TY - CHAP A1 - Elsen, Ingo T1 - A pixel based approach to view based object recognition with self-organizing neural networks T2 - IECON'98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society N2 - This paper addresses the pixel based classification of three dimensional objects from arbitrary views. To perform this task a coding strategy, inspired by the biological model of human vision, for pixel data is described. The coding strategy ensures that the input data is invariant against shift, scale and rotation of the object in the input domain. The image data is used as input to a class of self organizing neural networks, the Kohonen-maps or self-organizing feature maps (SOFM). To verify this approach two test sets have been generated: the first set, consisting of artificially generated images, is used to examine the classification properties of the SOFMs; the second test set examines the clustering capabilities of the SOFM when real world image data is applied to the network after it has been preprocessed to be invariant against shift, scale and rotation. It is shown that the clustering capability of the SOFM is strongly dependant on the invariance coding of the images. Y1 - 1998 SN - 0-7803-4503-7 U6 - https://doi.org/10.1109/IECON.1998.724032 N1 - Aachen, 31 August 1998 - 04 September 1998 SP - 2040 EP - 2044 PB - IEEE CY - New York ER - TY - CHAP A1 - Elsen, Ingo A1 - Kraiss, Karl-Friedrich A1 - Krumbiegel, Dirk T1 - Pixel based 3D object recognition with bidirectional associative memories T2 - International Conference on Neural Networks 1997 N2 - This paper addresses the pixel based recognition of 3D objects with bidirectional associative memories. Computational power and memory requirements for this approach are identified and compared to the performance of current computer architectures by benchmarking different processors. It is shown, that the performance of special purpose hardware, like neurocomputers, is between one and two orders of magnitude higher than the performance of mainstream hardware. On the other hand, the calculation of small neural networks is performed more efficiently on mainstream processors. Based on these results a novel concept is developed, which is tailored for the efficient calculation of bidirectional associative memories. The computational efficiency is further enhanced by the application of algorithms and storage techniques which are matched to characteristics of the application at hand. Y1 - 1997 SN - 0-7803-4122-8 N1 - June 9 - 12, 1997, Westin Galleria Hotel Houston, Texas, USA. SP - 1679 EP - 1684 PB - IEEE CY - New York ER - TY - CHAP A1 - Milijaš, Aleksa A1 - Šakić, Bogdan A1 - Marinković, Marko A1 - Butenweg, Christoph ED - Papadrakakis, Manolis ED - Fragiadakis, Michalis T1 - Experimental investigation of behaviour of masonry infilled RC frames under out-of-plane loading T2 - Proceedings of COMPDYN 2021 N2 - Masonry infills are commonly used as exterior or interior walls in reinforced concrete (RC) frame structures and they can be encountered all over the world, including earthquake prone regions. Since the middle of the 20th century the behaviour of these non-structural elements under seismic loading has been studied in numerous experimental campaigns. However, most of the studies were carried out by means of in-plane tests, while there is a lack of out-of-plane experimental investigations. In this paper, the out-of-plane tests carried out on full scale masonry infilled frames are described. The results of the out-of-plane tests are presented in terms of force-displacement curves and measured out-of-plane displacements. Finally, the reliability of existing analytical approaches developed to estimate the out-of-plane strength of masonry infills is examined on presented experimental results. KW - Seismic loading KW - Masonry infill KW - Out-of-plane load KW - Out-of-plane strength Y1 - 2021 SN - 978-618-85072-5-8 U6 - https://doi.org/10.7712/120121.8528.18914 SN - 2623-3347 N1 - COMPDYN 2021, 28-30 June 2021, Streamed from Athens, Greece, 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering SP - 829 EP - 846 PB - National Technical University of Athens CY - Athen ER - TY - CHAP A1 - Šakić, Bogdan A1 - Milijaš, Aleksa A1 - Marinković, Marko A1 - Butenweg, Christoph A1 - Klinkel, Sven ED - Papadrakakis, Manolis ED - Fragiadakis, Michalis T1 - Influence of prior in-plane damage on the out-of-plane response of non-load bearing unreinforced masonry walls under seismic load T2 - Proceedings of COMPDYN 2021 N2 - Reinforced concrete frames with masonry infill walls are popular form of construction all over the world as well in seismic regions. While severe earthquakes can cause high level of damage of both reinforced concrete and masonry infills, earthquakes of lower to medium intensity some-times can cause significant level of damage of masonry infill walls. Especially important is the level of damage of face loaded infill masonry walls (out-of-plane direction) as out-of-plane load cannot only bring high level of damage to the wall, it can also be life-threating for the people near the wall. The response in out-of-plane direction directly depends on the prior in-plane damage, as previous investigation shown that it decreases resistance capacity of the in-fills. Behaviour of infill masonry walls with and without prior in-plane load is investigated in the experimental campaign and the results are presented in this paper. These results are later compared with analytical approaches for the out-of-plane resistance from the literature. Conclusions based on the experimental campaign on the influence of prior in-plane damage on the out-of-plane response of infill walls are compared with the conclusions from other authors who investigated the same problematic. KW - Earthquake Engineering KW - Unreinforced masonry walls KW - Out-of-plane load KW - In- plane damage KW - Out-of-plane failure Y1 - 2021 SN - 9786188507258 U6 - https://doi.org/10.7712/120121.8527.18913 SN - 2623-3347 N1 - COMPDYN 2021, 28-30 June 2021, Streamed from Athens, Greece, 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering SP - 808 EP - 828 PB - National Technical University of Athens CY - Athen ER -