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等径圆球组简单压缩下的宏观应力-应变关系
引用本文:霍召欣,黄文彬.等径圆球组简单压缩下的宏观应力-应变关系[J].力学与实践,2003,25(3):23-25.
作者姓名:霍召欣  黄文彬
作者单位:中国农业大学东区基础科学部,北京,100083
基金项目:国家自然科学基金项目(19972075)资助
摘    要:应用虚功原理推导出规则排列等径因球颗粒在赫兹接触规律下简单压缩时宏观应力应变关系,并与TRUBAL程序离散元法模拟结果做了比较.比较发现规则排列模拟结果和理论结果是一致的.进一步模拟研究了随机排列,给出了等径圆球随机排列宏观应力应变关系拟合公式.

关 键 词:虚功原理  等径圆球组  简单压缩  宏观应力-应变关系  离散元法  随机排列
修稿时间:2002年8月20日

MACROSCOPIC STRESS-STRAIN RELATIONSHIP OF AN ASSEMBLY OF IDENTICAL SPHERES UNDER SIMPLE COMPRESSION
HUO Zhaoxin HUANG Wenbin.MACROSCOPIC STRESS-STRAIN RELATIONSHIP OF AN ASSEMBLY OF IDENTICAL SPHERES UNDER SIMPLE COMPRESSION[J].Mechanics and Engineering,2003,25(3):23-25.
Authors:HUO Zhaoxin HUANG Wenbin
Abstract:The stress-strain relationship under simple compression was derived according to the theory of Hertz, using the principle of virtual work for an assembly of mono-size spheres with regular packing, and the results were compared with those by the discrete element simulation with the code TRUBAL developed by Thornton. A good agreement between both results was shown. Further simulation for an assembly of mono-size spheres with a random packing was carried out, and a fitting expression of stress-strain relationship for the random packing was proposed.
Keywords:the theory of Hertz  spherical particle  stress- strain relationship  discrete element simulation
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