FINITE ELEMENT ANALYSIS FOR ELASTO-PLASTIC STRAIN HARDENING-SOFTENING SOIL MODEL WITH SHEAR BANDING

摘要

The solutions of boundary value problems involving strain-softening material property are full of serious difficulties from both modeling of strain-localization and a viewpoint of numerical procedure. Mesh size-dependent softening modulus is considered to alleviate the mesh size-dependency of the solution. The elasto-plastic soil model is applied to direct shear tests and retaining structures. The soil model is based on experimental findings about inherent and induced anisotropies involved in sand. The results of finite element analysis are compared with those from the physical experiments.