Discrete approach for elastoplastic damage modeling in anisotropic rocks
A constitutive coupled plasticity-damage formulation based on fabric tensor and discrete approach is proposed for modeling inherent and induced anisotropy in cohesive-frictional geomaterials. Fabric tensor is used to characterize the inherent orientation-dependent properties of materials. Macroscopic plastic deformation and material degradation are considered as the result of frictional sliding along weak planes. For each weak plane, damage evolution law and plastic flow are formulated within the framework of irreversible thermodynamics. The coupling problem between the inherent and induced anisotropy is carefully addressed and discussed. A series of numerical simulations are performed in order to check the predictive performance of the proposed model. Comparisons between numerical results and test data show the present model is capable of describing the main mechanical behaviors of anisotropic materials.
L.CHEN J.F.SHAO Q.Z.Zhu X.T.CHEN
Laboratoire de M(e)canique de Lille, Polytech-Lille ,France Laboratoire de M(e)canique de Lille, Ecole central de Lille, France
国际会议
香港
英文
1-5
2009-05-19（万方平台首次上网日期，不代表论文的发表时间）