Author(s)

F.B. Lin & G. Van

Abstract

Strain-softening damage modeling using boundary element method F.B. Lin, G. Van Department of Civil and Environmental Engineering, Polytechnic University, 6 Metrotech Center, Brooklyn, NY 11201, USA ABSTRACT A plasticity model with yield limit degradation is implemented in a boundary element program to study the fracture behavior of quasi-brittle materials. A special integration method is applied to deal with the singular integrations encountered in the volume integrals over internal cells. Strain-softening damage localizations are investigated. It is found that the damage tends to localize into a zone of one cell wide which leads to an incorrect result when different cell meshes are used in the analysis. Some sort of localization limiter has to be incorporated into the analysis in order to achieve meaningful results. INTRODUCTION In the simulation of fracture behavior of quasi-brittle materials such as concrete or ceramics, it is essential to take into acc

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