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High Quality Representation of 2D Crack Bridge Slate for Finite Element Simulation of Cementitious Composites



Title: High Quality Representation of 2D Crack Bridge Slate for Finite Element Simulation of Cementitious Composites
Author(s): J. Jerábek, R. Chudoba, J. Hegger
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: 73 - 81
Total Pages: 9
Nb references: 16
Language: English


Abstract: This paper reviews an enriched finite element representation of crack bridges suitable for simulating the complex damage processes in cementitious composites. The heterogeneity of both the matrix and the reinforcement phase occurs at similar length scales of the material structure. Consequently, an improved accuracy of approximation at the hot-spots of damage is required in order to capture the relevant damage mechanisms. The explicit representation of the matrix crack is thus inevitable. Besides that, the quality of the strain and stress fields along the discontinuity is of special importance. This paper presents numerical approach combining the XFEM approximation of matrix displacement field with higher-order approximation of the reinforcement field in order to reflect the peak values in the crack bridge for selected elementary configurations.


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