On Simulation of Strain Localization Using Microplasicity Constitutive Models
The common perception that a regularization method such as strain gradient or micropolar enhancement must be able to produce mesh objective solutions is evaluated within the framework of micropolar plasticity for granular soils.It is shown while this perception holds for micropolar enhancement of classical elastoplasticity constitutive models in which the stress state remains within an elastic domain for a large part of reverse loading.However,micropolar plasticity models that are able to accurately model the reverse loading accounting for large volume change of the soil during reverse loading do not appear to follow the same rule.
Elastoplasticity Finite Elements Localization Micropolar Sand Two-surface plasticity
Majid T.Manzari Karma Yonten
Department of Civil and Environmental Engineering The George Washington University 801 22nd Street,N Glenn Department of Civil Engineering,Clemson University 200 Lowry Hall,Clemson SC 29634
国际会议
北京
英文
211-214
2012-10-15（万方平台首次上网日期，不代表论文的发表时间）