文档介绍：第30卷增刊岩土力学 Supp. 2009年8月 Rock and SoilMechanics 文章编号l1000—7598一(2009)增l—0093—06 基于颗粒组构特性的散体材料本构模型研究高政国1,Hayley (,北京100191;,美国13699) 摘要:通过散体介质材料单元颗粒排列组构表达的细观结构力学关系,建立了用颗粒密集度、颗粒排列组构关系和颗粒间摩擦特性等非连续介质材料特性参数描述的散体介质材料本构模型,从而实现散体介质材料宏观连续介质描述的等效应力表达;通过该模型可采用数值方法进行散体介质材料准静态情况下的力学特性分析。文中最后基于有限元软件ABAQUS,进行了该奉构模型的二次开发。数值算例结果验证了所建立散体介质材料本构模型的适用性。关键词:散体介质材料;本构模型;颗粒排列组构中图分类号l TU 443 文献标识码,A Astudy ofconstitutive model forgranular material based on characters ofdiscrete particles arranged GAO ,Hayley ( ofTransportation ScienceandEngineering,Beihang University,B两ing ofCivil&EnvironmentalEngin帆Cla,-f,.son ) Abstract:A granular material constitutive model considered theparticles arranged pattern representative unitwhich consists ofseveralparticles inffoduced relations between stress and strain can be described by the particle paRern wim particle arranged unit,and the friction between Finiteelement programming work has been done based on thesoftware numerical example illustratesthattheconstitutive model beapplied tonumerical analysis ofgranular material which the behavior ofparticles considered. Key words:granular material;constitutivemodel;particles arrangement 1前言散体介质材料问题广泛存在于物理科学、工业技术、生物科学和交通运输等诸多领域。与常规固体、流体介质