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Adaptive Multiscale Methods for Damage Prediction in Heterogeneous Brittle Materials



Title: Adaptive Multiscale Methods for Damage Prediction in Heterogeneous Brittle Materials
Author(s): C. Könke, S. Eckardt, J. F. Unger
Paper category : conference
Book title: International RILEM Conference on Material Science
Editor(s): W. Brameshuber
Print-ISBN: 978-2-35158-108-7
e-ISBN: 978-2-35158-109-4
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 55 - 71
Total Pages: 17
Nb references: 46
Language: English


Abstract: This paper describes an adaptive approach to model heterogeneous composite materials, such as concrete, coupling meso- and marcoscale models into a concurrent multiscale model. Analysis on meso- and micro-scales enables to explore the properties of new materials by virtual material tests, leading towards a digital material framework for material scientists and engineers. The model starts with a full marcoscale model and adaptively introduces mesoscale models only in regions where localized damage effects are detected. Therewith detailed predictions about the damage evolution processes in these materials can be given with acceptable numerical effort even for large scale structural components. The paper will discuss issues of model generation for matrix-inclusion materials on mesoscale, numerical aspects of different efficient solution methods for large scale nonlinear equation systems, different approaches of scale bridging and it will demonstrate the quality and efficiency of our approach by presenting examples where numerical simulation results are compared with reference results from physical experiments.


Online publication: 2010-12-02
Publication type : full_text
Public price (Euros): 0.00