颗粒材料冲击破碎的二维数值模拟

Two-dimensional Numerical Simulation of Impact Crushing Inside Granular Materials

通过移动元胞自动机法(MCA)对颗粒材料冲击破碎的二维数值模拟得到了不同时刻材料破碎的网格图和温度场,并与国外的相关数值模拟及光弹实验结果进行了比较,较好地反映出颗粒材料在冲击载荷作用下的破碎过程,解释了滑石块体、玻璃球在落锤冲击破碎实验中得到的部分实验现象.

In this paper, Movable Cellular Automata （MCA） is applied to the two dimensional numerical simulation on impact crushing of granular materials, from which their mesh diagram and temperature fields of materials crushing at different times are obtained. Then a comparison with the corresponding numerical simulation and laboratory result abroad is carried out. The results shows clearly the crushing process of granular materials under different impact loading conditions. It also explains partly the laboratory phenomenon observed in the drop-hammer impact experiment on talcum particles and glass balls.