Numerical evaluation of geomaterials behavior upon multiplane damage model

Among the various numerical simulating constitutive models for geomaterials, the constitutive models which formulated within multilaminate framework have an excellent position. The major advantage of these models is because of its simplicity of working instead of complicated microscopic models such as discrete particles models and do not have the shortcomings of macroscopic models based on the stress or strain invariants.The object of this study is to deal with the problem exists in the present multilaminate models built on a numerical integration upon 13 sampling points, which both compatibility and equilibrium conditions are not simultaneously satisfied. To overcome this problem, a logical 17 sampling points of numerical integration is presented. The obtained results show a good match with experimental tests.