INFLUENCE OF NON-COAXIAL PLASTICITY ON LOCALIZED FAILURE IN GEOMATERIALS

摘要：

Theoretical predictions for the inception of localized failure are critically dependent upon the constitutive description of continuous deformation prior to bifurcation.Due to inevitable limitations of coaxiality between principal directions of stress and the rate of plastic deformation in a classical plasticity constitutive model,a 3D non-coaxial plastic constitutive framework has been developed to modify the classical coaxial plasticity flow rule.The present non-coaxial model is employed for predicting localized failure behaviors in a series of true triaxial tests.Comparisons between numerical predictions and experiments show that 3D non-coaxial plasticity model has given correct analysis of localized failures under true triaxial conditions.

关键词： non-coaxiality bifurcation localized failure true triaxial tests

作者: J.G.Qian M.S.Huang

作者单位: Department of Geotechnical Engineering,Tongji University,Shanghai,200092,China

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 1100-1103

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）