Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Progressive collapse simulation of steel frame structures - accomplishments and validation challenges
Progressive collapse simulations of moment resisting steel frame buildings are presented. Since the collapse of the World Trade Center towers, progressive collapse has received broad scientific attention. However there are many more tragic collapses around the world every year. Usually localized failure (breakdown of a single structural member) undesirably propagates throughout the structure causing catastrophic collapse. Simulations of structural response to the sudden removal of a key structural member have been carried out for a number of moment resisting steel frames. The immediate objective is to understand the key mechanisms during the collapse. Such analysis is at the forefront of civil engineering modelling because it involves material nonlinearities, large deflections, finite strains, and certainly requires dynamic analysis. The modelling aspects (e.g. retrieving reliable structural information, probabilistic geometric inaccuracies, and material models) are presented. Obtained results with limited experimental validation are also discussed. Whereas, certain stages of the modelling process are readily available (e.g. finite element solvers), proper validation of numerical simulation concerns experienced engineers. While simple calculation models can be employed in many situations, progressive collapse and many other real life designs cannot be addressed with such simplified procedures. Efficient validation techniques for the problem at hand and recommendations for future work in this area conclude the presentation.
Progressive collapse simulation of steel frame structures - accomplishments and validation challenges
Progressive collapse simulations of moment resisting steel frame buildings are presented. Since the collapse of the World Trade Center towers, progressive collapse has received broad scientific attention. However there are many more tragic collapses around the world every year. Usually localized failure (breakdown of a single structural member) undesirably propagates throughout the structure causing catastrophic collapse. Simulations of structural response to the sudden removal of a key structural member have been carried out for a number of moment resisting steel frames. The immediate objective is to understand the key mechanisms during the collapse. Such analysis is at the forefront of civil engineering modelling because it involves material nonlinearities, large deflections, finite strains, and certainly requires dynamic analysis. The modelling aspects (e.g. retrieving reliable structural information, probabilistic geometric inaccuracies, and material models) are presented. Obtained results with limited experimental validation are also discussed. Whereas, certain stages of the modelling process are readily available (e.g. finite element solvers), proper validation of numerical simulation concerns experienced engineers. While simple calculation models can be employed in many situations, progressive collapse and many other real life designs cannot be addressed with such simplified procedures. Efficient validation techniques for the problem at hand and recommendations for future work in this area conclude the presentation.
Progressive collapse simulation of steel frame structures - accomplishments and validation challenges
Simulation des progressiven Zusammenbruchs einer Stahlrahmenkonstruktion - Erfüllung und Bewertung der Herausforderungen
Szyniszewski, Stefan (Autor:in) / Krauthammer, Ted (Autor:in)
2008
8 Seiten, 11 Bilder, 17 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
Bauingenieurwesen , Stahlbau , Stahlkonstruktion , Stahlrahmen , Spannungs-Dehnungs-Verhalten , Knickspannung , Bruchspannung , Bruchgrenze , Zusammenbruch , dynamische Prüfung , zweidimensionale Darstellung , dreidimensionale Darstellung , numerische Simulation , mathematisches Modell , Finite-Elemente-Methode , Bewertungsmethode
| British Library Conference Proceedings | 2008
Macromodel-Based Simulation of Progressive Collapse: Steel Frame Structures
| Online Contents | 2008
Macromodel-Based Simulation of Progressive Collapse: Steel Frame Structures
| British Library Online Contents | 2008
Simplified progressive collapse simulation of RC frame–wall structures
| Online Contents | 2010
Macromodel-Based Simulation of Progressive Collapse: RC Frame Structures
| British Library Online Contents | 2008