Characterizing the Plastic Strain Localization in Cosserat Media
In this contribution, the Desai hierarchical model is extended to the case of 3D elasto-plastic Cosserat continuum. The details of the constitutive model are presented. The regularizing effect of the introduction of a length parameter to the classical Desai model is demonstrated by means of numerical study of 3D sand specime subject to true triaxial load. It is shown that due to the presence of an internal length scale changing in magnitude during the deformation of the material, mesh independence can be ensured.
Cosserat continuum Desai Hierarchical model constitutive model internal length scale strain localization
X.Liu A.Scarpas
Section of Structural Mechanics,Faculty of Civil Engineering and Geosciences,Delft University of Technology,Stevinweg 1,2628 CN Delft,The Netherlands
国际会议
北京
英文
2007-07-30（万方平台首次上网日期，不代表论文的发表时间）