The Mechanics Simulation of MSG Strain Gradient Plasticity Theory in Granular Material

Electronic journal of geotechnical engineering

Liu Jia1,2,3 and Fang Yingguang1,2¹ 

[1] 1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong 510641, China2. State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou, Guangdong 510641, China

关键词: granular material;    strain gradient;    microstructure;    size effect;    finite element;   

DOI  :  

来源: Oklahoma State University

【 摘 要 】

Thesizeeffectofgranularmaterialisrelatedwithitsmicrostructure,ofwhichdiscontinuitywillcausethediscontinuityofdeformation,interfacialstressandenergyspaceatthemicrolevel.MSGstraingradientplasticitytheorycancorrectlypredictthesizeeffectofgranularmaterialbyconsideringthemicrostructurecharacteristicsofgranularmaterialandintroducingstraingradientwhichdescribesthediscontinuityofphysicalquantitiesintheclassicelastic-plasticconstitutiverelation.BasedontheMSGstraingradientplasticitytheory,weusethevirtualworkprincipletoderivetheequilibriumequationandtheboundaryconditions,andthenproposetheincrementalequationsandtheiterativeprocessoffiniteelement.Itcanbeusedasamethodtosimulatethedeformationtofailureprocessofgranularmaterialandpredictitsspecialmechanicsbehavior.

【 授权许可】

Unknown