Aspekte der Modellierung des Tragverhaltens von Textilbeton unter biaxialer Beanspruchung

Zur Bemessung und Simulation von flächigen Textilbetonstrukturen werden Berechnungsmodelle benötigt, die das Materialverhalten unter biaxialer Beanspruchung abbilden können. Für eindimensionale Strukturen existieren einige Modelle, zu deren Weiterentwicklung eine Erweiterung zur Abbildung des biaxialen Materialverhaltens vorgeschlagen wird. In diesem Beitrag werden die notwendigen Erweiterungen und deren Umsetzbarkeit bei der Modellierung diskutiert und bewertet.For design and simulation of plane textile reinforced concrete structures mechanical models representing the material behaviour under biaxial loading are necessary. For one-dimensional structures several models were presented in the past. For their further development an extension for biaxial material behaviour is usually proposed. In this paper the required extensions are discussed and their feasibility for modelling is assessed

Numerische Simulation des mechanischen Verhaltens von Textilbeton unter Berücksichtigung mehrerer Strukturebenen

The failure mechanisms of textile reinforced concrete (TRC), which is a composite of bundles of long fibers and fine concrete, are complex. Most important for the ductility is the successive debonding of the fibers from the surrounding matrix when the brittle matrix is cracking. Therefore, one of the main issues is the simulation of the bond behavior between the reinforcement and the matrix. By introducing a hierarchical material model for TRC the mechanical behavior is simulated by means of representative volume elements modelled on the meso scale. Finite element analysis is used to determine the effective properties of TRC within a periodic homogenization framework. Further, a multiscale finite element technique is suggested, where constitutive equation are formulated only on the meso level

Aspekte der Modellierung des Tragverhaltens von Textilbeton unter biaxialer Beanspruchung

Zur Bemessung und Simulation von flächigen Textilbetonstrukturen werden Berechnungsmodelle benötigt, die das Materialverhalten unter biaxialer Beanspruchung abbilden können. Für eindimensionale Strukturen existieren einige Modelle, zu deren Weiterentwicklung eine Erweiterung zur Abbildung des biaxialen Materialverhaltens vorgeschlagen wird. In diesem Beitrag werden die notwendigen Erweiterungen und deren Umsetzbarkeit bei der Modellierung diskutiert und bewertet.For design and simulation of plane textile reinforced concrete structures mechanical models representing the material behaviour under biaxial loading are necessary. For one-dimensional structures several models were presented in the past. For their further development an extension for biaxial material behaviour is usually proposed. In this paper the required extensions are discussed and their feasibility for modelling is assessed

Aspekte der Modellierung des Tragverhaltens von Textilbeton unter biaxialer Beanspruchung

Zur Bemessung und Simulation von flächigen Textilbetonstrukturen werden Berechnungsmodelle benötigt, die das Materialverhalten unter biaxialer Beanspruchung abbilden können. Für eindimensionale Strukturen existieren einige Modelle, zu deren Weiterentwicklung eine Erweiterung zur Abbildung des biaxialen Materialverhaltens vorgeschlagen wird. In diesem Beitrag werden die notwendigen Erweiterungen und deren Umsetzbarkeit bei der Modellierung diskutiert und bewertet.For design and simulation of plane textile reinforced concrete structures mechanical models representing the material behaviour under biaxial loading are necessary. For one-dimensional structures several models were presented in the past. For their further development an extension for biaxial material behaviour is usually proposed. In this paper the required extensions are discussed and their feasibility for modelling is assessed

3D Modeling of Thin-Walled Structures

IASS-IACM 2008 Session: 3D Modeling of Thin-Walled Structures -- Session Organizers: Manfred BISCHOFF, Ekkehard RAMM (University of Stuttgart) -- Plenary Lecture: Abstract, Slides and Video "Modeling of shells with three-dimensional finite elements" by Manfred BISCHOFF (University of Stuttgart) -- Keynote Lecture: "Modeling and mesh error estimates for plates and thick shells" by Uros BOHINC, Bostjan BRANK (University of Ljubljana), Adnan IBRAHIMBEGOVIC, (ENS-Cachan) -- "Physical applications for a nonlinear micropolar formulation on shells" by Ingo MUNCH, Werner WAGNER (Universitat Karlsruhe), Patrizio NEFF (TU Darmstadt) -- "Utilization of the assumed natural strain method in a surface-related solid-shell element" by Bernd W. ZASTRAU, Rainer SCHLEBUSCH (TU Dresden) -- "Dimensional adaptivity in finite element simulation of sheet metal forming" by Dmitry LEDENTSOV, Alexander DUSTER, Ernst RANK (TU Munchen), Ingo HEINLE, Wolfram VOLK, Marcus WAGNER (BMW Group, Munchen