A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Damage Propagation in Composites - Multiscale Modeling and Optimization
The paper addresses general solution concepts for multiscale analyses and structural optimization of composite structures under damage evolution. Fiber Reinforced Composites, in particular Fiber Reinforced Concrete, are chosen as model material. First we describe undamaged and damaged material interfaces as well as matrix cracks utilizing the eXtended Finite Element Method (XFEM) and Level Set methods. The next part focuses on a solution strategy based on the Variational Multiscale Method (VMM) allowing to describe localized long range failure mechanisms for which standard homogenization is not applicable anymore. Either continuum damage or the discrete cohesive crack model applying XFEM is inserted into the VMM framework. Finally material optimization is performed to obtain an optimal fiber layout maximizing structural ductility.
Damage Propagation in Composites - Multiscale Modeling and Optimization
The paper addresses general solution concepts for multiscale analyses and structural optimization of composite structures under damage evolution. Fiber Reinforced Composites, in particular Fiber Reinforced Concrete, are chosen as model material. First we describe undamaged and damaged material interfaces as well as matrix cracks utilizing the eXtended Finite Element Method (XFEM) and Level Set methods. The next part focuses on a solution strategy based on the Variational Multiscale Method (VMM) allowing to describe localized long range failure mechanisms for which standard homogenization is not applicable anymore. Either continuum damage or the discrete cohesive crack model applying XFEM is inserted into the VMM framework. Finally material optimization is performed to obtain an optimal fiber layout maximizing structural ductility.
Damage Propagation in Composites - Multiscale Modeling and Optimization
Ramm, Ekkehard (author) / Erhart, Andrea (author) / Hettich, Thomas (author) / Bruss, Ingrid (author) / Hilchenbach, Frederic (author) / Kato, Junji (author)
2011
24 Seiten
Article/Chapter (Book)
English
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