颗粒材料力学特性的数值模拟  

Numerical simulation on mechanical properties of granular materials

作　　者：郭培玺[1,2] 俞缙[3] 林绍忠[4] 程展林[4] 周密[4] 

机构地区：[1]河海大学岩土工程科学研究所,江苏南京210098 [2]中冶集团武汉勘察研究院有限公司,湖北武汉430080 [3]南京水利科学研究院岩土工程研究所,江苏南京210024 [4]长江科学院,湖北武汉430010

出　　处：《河海大学学报（自然科学版）》2008年第6期806-809,共4页Journal of Hohai University(Natural Sciences)

基　　金：国家自然科学基金委员会;二滩水电开发有限责任公司雅砻江水电开发联合研究基金(50639050)

摘　　要：针对颗粒介质特殊的力学特性,研究了二维颗粒堆积体中力的传递与分布,应用离散元理论建立数值模拟模型,并计算了堆积体中的接触力.结果表明,计算结果与物理试验现象较为吻合,在模拟中同时反映了颗粒介质中的拱效应和双峰现象.For the special mechanical properties of granular materials, the transfer and distribution of the forces of twodimensional granular packs were studied. A numerical model was established by use of the distinct element theory, and the contact forces in the packs were calculated. The simulated results agreed with the physical test phenomena. At the same time, the arching effect and two peak phenomena were also reflected during the simulation process .

关 键 词：颗粒材料 力学特性 颗粒流 应力-应变关系 数值模拟 

分 类 号：TU441.3[建筑科学—岩土工程]