【摘要】 应用虚功原理推导出规则排列等径圆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.更多还原

【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.更多还原