TY - CONF A1 - Häßler, Dustin ED - Jasienko, J. T1 - The 'elliptical beams' in the winter palace in Saint Petersburg - structural assessment of a lightweight structure T2 - SAHC 2012 - 8th International conference on structural analysis of historical constructions (Proceedings) T2 - SAHC 2012 - 8th International conference on structural analysis of historical constructions CY - Wroclaw, Poland DA - 2012-10-15 KW - Elliptical beam KW - Winter Palace KW - State Hermitage Museum KW - Historical construction KW - Lightweight structure KW - Puddle steel KW - Structural analysis KW - FEM PY - 2012 SN - 978-83-7125-216-7 SN - 0860-2395 VL - 1 SP - 262 EP - 272 PB - DWE CY - Wroclaw, Poland AN - OPUS4-26861 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Häßler, Dustin A1 - Hothan, Sascha T1 - Numerical and experimental analysis of reactive fire protection systems applied to solid steel rods in tension T2 - Applications of structural fire engineering conference (Proceedings) N2 - The application of intumescent coatings for fire protection of steel constructions is increasing. Thanks to the relative thin thickness of the coatings, the typical visual appearance of the structures can be preserved. In Germany, the applicability of the systems is regulated by the national as well as European technical approvals. According to the approvals, the application on steel members in tension is only allowed with limitations. Especially, the application on solid steel rods in tension is currently not covered. The paper will explain the actual state of the art of the application of reactive fire protection systems applied to steel structures. Physical and technical background information will be provided. After that, the latest scientific results of an on-going research project funded by the German National Institute of Building Technology (DIBt) and conducted by the Federal Institute for Materials Research and Testing (BAM) will be described. T2 - Applications of structural fire engineering conference CY - Prague, Czech Republic DA - 2013-04-19 KW - Steel structure KW - Solid rod KW - Tension KW - Fire protection KW - Reactive fire protection systems KW - Structural analysis KW - Finite element method (FEM) KW - Experimental testing PY - 2013 UR - http://fire.fsv.cvut.cz/ASFE13/Proceedings/ASFE_13_Proceedings.pdf SN - 978-80-01-05204-4 SP - 454 EP - 460 PB - CTU CY - Prague AN - OPUS4-28281 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Zencker, Uwe A1 - Wieser, Günter A1 - Qiao, Linan A1 - Protz, Christian T1 - Modeling strategies for dynamic finite element cask analyses T2 - PATRAM 2013 - 17th International symposium on the packaging and transportation of radioactive materials (Proceedings) N2 - The safety of transport packages may be demonstrated by numerical calculation of load scenarios defined in the IAEA regulations. Possible handling accidents of casks at interim storage sites or in a final repository are typically analyzed by dynamic finite element computations. In each case the investigated load scenario must be transferred into a mathematical model. Secondly the mathematical model must be transferred into a numerical model. Reliable finite element models should be developed by assembling verified sub-models of components. The finite element mesh, material modeling, initial and boundary conditions, contact definitions, and time integration as well as the benefit of pre- and post-calculations are discussed. The paper presents lessons learnt from modeling dynamic test scenarios for finite element analyses over the years. T2 - PATRAM 2013 - 17th International symposium on the packaging and transportation of radioactive materials CY - San Francisco, CA, USA DA - 18.08.2013 KW - Structural analysis KW - Dynamic numerical simulation KW - Modeling strategies KW - Discretization KW - Material modeling KW - Boundary conditions KW - Cask load scenarios PY - 2013 SP - Session A, Paper 280, 1 EP - 10 PB - Omnipress AN - OPUS4-30158 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Komann, Steffen A1 - Neumann, Martin A1 - Ballheimer, Viktor A1 - Wille, Frank A1 - Weber, Mike A1 - Qiao, Linan A1 - Droste, Bernhard T1 - Mechanical assessment within type B packages approval: application of static and dynamic calculation approaches JF - Packaging, transport, storage & security of radioactive materials (RAMTRANS) N2 - This paper demonstrates exemplarily how numerical and experimental approaches can be combined reasonably in mechanical assessment of package integrity according to the IAEA regulations. The paper also concentrates on the question about how static mechanical approaches can be applied, and what their problems are in relation to dynamic calculation approaches. Under defined impact tests, which represent accident transport conditions, the package has to withstand impact loading, e.g. resulting from a 9 m free drop onto an unyielding target in sequence with a 1 m puncture drop test. Owing to the local character of the interaction between the puncture bar and the cask body, it is possible to develop a dynamic numerical model for the 1 m puncture drop which allows an appropriate simulation of the interaction area. Results from existing experimental drop tests with prototype or small scale cask models can be used for verification and validation of applied analysis codes and models. The link between analysis and experimental drop testing is described exemplarily by considering a regulatory 1 m puncture bar drop test onto the cask body of a recently approved German high level waste transport package. For the 9 m drop test of the package, it is difficult to develop a dynamic numerical model of the package due to the complexity of the interaction between cask body, impact limiters and unyielding target. Dynamic calculations require an extensive verification with experimental results. The simulation of a 9 m drop of a package with impact limiters is thereby often more complex than the simulation of a 1 m puncture drop onto the cask body. A different approximation method can be applied for the consideration of dynamic effects on the impact loading of the package. In a first step, maximum impact force and rigid body deceleration of the cask body during the impact process can be calculated with simplified numerical tools. This rigid body deceleration can subsequently be applied on a verified static numerical model. Dynamic effects, which cannot be covered by the static numerical analysis, have therefore to be considered by using an additional dynamic factor. The paper describes this approach exemplarily for a 9 m horizontal drop of a typical spent fuel cask design. KW - Package assessment KW - Package KW - Packaging KW - Structural analysis PY - 2011 DO - https://doi.org/10.1179/1746510911Y.0000000012 SN - 1746-5095 SN - 1746-5109 SN - 0957-476X VL - 22 IS - 4 SP - 179 EP - 183 PB - Ramtrans Publ. CY - Ashford AN - OPUS4-26448 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Held, Felix A1 - Robens-Radermacher, Annika A1 - Unger, Jörg F. A1 - Reese, S. T1 - Efficient model updating in structural analysis using proper generalized decomposition N2 - Motivation: Lifetime of a bridge, One-dimensional model updating Model order reduction using proper generalized decomposition T2 - EUROMECH Colloquium 597 CY - Bad Herrenalb, Germany DA - 28.08.2018 KW - Structural analysis KW - One-dimensional model updating KW - Conclusion PY - 2018 AN - OPUS4-48045 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Held, Felix A1 - Robens-Radermacher, Annika A1 - Unger, Jörg F. A1 - Reese, Stefanie T1 - Efficient model updating in structural analysis using proper generalized decomposition N2 - The proper generalized decomposition is combined with a Bayesian model updating to identify unknown material parameters for mechanical structures. A convergence analysis for the Bayesian updating procedure is finally presented. T2 - ECCOMAS YIC 2019 5th Young Investigators Conference CY - Krakau, Poland DA - 01.09.2019 KW - Efficient model updating KW - Structural analysis PY - 2019 AN - OPUS4-48902 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Held, Felix A1 - Robens-Radermacher, Annika A1 - Unger, Jörg F. A1 - Reese, S. T1 - Efficient model updating in structural analysis using PGD N2 - In this contribution a Proper Generalized Decomposition model is derived for linear elastic structures with Young's modulus as extra-coordinates. Next, the computed PGD solution is used in a Bayesian model updating algorithm resulting a probability distribution of the searched model parameter for given synthetic data. The future goal is to extend the method to be able to identify arbitrary material parameters, based on experimental data. T2 - EUROMECH Colloquium 597 CY - Bad Herrenalb, Germany DA - 28.08.2018 KW - Structural analysis KW - Efficient model updating PY - 2018 AN - OPUS4-48046 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Sander, C. A1 - Kühne, Hans-Carsten A1 - Ünal, Murat A1 - Kleine, M. A1 - Köhler, A. A1 - Kriesten, V. T1 - Betondickglasfenster - Schadensmechanismen und Instandsetzungsprinzipien zur Erhaltung JF - Restauro N2 - Errichtet aus Glas und Beton prägen heute unzählige Sakralbauten der 1950er- und 60er-Jahre unsere Stadtbilder. Nicht selten sind in diesen Kirchen erhebliche Schäden an den Betonglasfenstern zu verzeichnen. Diese fachgemäß zu erhalten, erfordert spezielles technisches und denkmalpflegerisches Know-how. An der Entwicklung geeigneter Instandsetzungsstrategien arbeitet derzeit ein interdisziplinäres Projektteam. KW - Betonglasrestaurierung KW - Schadensmechanismen KW - Instandsetzungsprinzipien KW - Glass KW - (Reinforced) concrete KW - Church windows KW - Churches KW - Structural analysis KW - Concrete block technique KW - Reinforcement KW - Dalle de verre PY - 2011 SN - 0933-4017 VL - 7 SP - 48 EP - 53 PB - Callwey CY - München AN - OPUS4-24834 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wu, Cheng-Chieh A1 - Kadoke, Daniel A1 - Fischer, Michael A1 - Kohlhoff, Harald A1 - Weisbrich, S. A1 - Neitzel, F. T1 - A small-scale test bridge for measurement- and model-based structural analysis N2 - To examine the capability to detect and localise damage using the Measurement- and Model-based Structural Analysis (MeMoS), a small-scale truss bridge (1520 mm × 720 mm × 720 mm) made of aluminium profiles is built as a test specimen for this purpose. The truss frame of the test bridge is made of aluminium profiles with a sophisticated design of the cross-sectional area. In comparison, with solid profiles, only a fraction of the material is needed to produce the profiles, while their bending resistance decreases slightly. The profiles are built into a truss frame by connecting them by means of fastening sets made of steel. The bridge model is mounted on four steel bearings which each of them consist of a cylinder arranged between two plates. Fixed bearings are made by holding onto one end of the bridge. The bridge is subjected by an external load by placing a heavy object beneath it. At the same time, measurements can be conducted below the bridge. Therefore, the bridge specimen is elevated by attaching it on a pedestal with four columns. Damages can be induced by loosening the fastening pieces. T2 - 35th Danubia-Adria Symposium on Advances in Experimental Mechanics CY - Sinaia, Romania DA - 25.09.2018 KW - Adjustment calculation KW - Finite element method KW - Damage detection and localisation KW - Structural analysis KW - Photogrammetry PY - 2018 AN - OPUS4-46113 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wu, Cheng-Chieh A1 - Kadoke, Daniel A1 - Fischer, Michael A1 - Kohlhoff, Harald A1 - Weisbrich, S. A1 - Neitzel, F. ED - Pastramă, Ştefan Dan ED - Constantinescu, Dan Mihai T1 - A small-scale test bridge for measurement- and model-based structural analysis T2 - 35TH DANUBIA ADRIA SYMPOSIUM ON ADVANCES IN EXPERIMENTAL MECHANICS Extended abstracts N2 - To examine the capability to detect and localise damage using the Measurement- and Model-based Structural Analysis (MeMoS), a small-scale truss bridge (1520 mm × 720 mm × 720 mm) made of aluminium profiles is built as a test specimen for this purpose. The truss frame of the test bridge is made of aluminium profiles with a sophisticated design of the cross-sectional area. In comparison, with solid profiles, only a fraction of the material is needed to produce the profiles, while their bending resistance decreases slightly. The profiles are built into a truss frame by connecting them by means of fastening sets made of steel. The bridge model is mounted on four steel bearings which each of them consist of a cylinder arranged between two plates. Fixed bearings are made by holding onto one end of the bridge. The bridge is subjected by an external load by placing a heavy object beneath it. At the same time, measurements can be conducted below the bridge. Therefore, the bridge specimen is elevated by attaching it on a pedestal with four columns. Damages can be induced by loosening the fastening pieces. T2 - 35th Danubia-Adria Symposium on Advances in Experimental Mechanics CY - Sinaia, Romania DA - 25.09.2018 KW - Adjustment calculation KW - Finite element method KW - Damage detection and localisation KW - Structural analysis KW - Photogrammetry PY - 2018 SN - 978-606-23-0874-2 SP - 23 EP - 24 PB - PRINTECH CY - Bukarest AN - OPUS4-46116 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -