应力波作用下颗粒介质的动力特性研究

运用微结构连续介质力学和多刚体系统动力学的理论方法，考虑了颗粒体的拓扑结构及颗粒体之间的局部非线性相互作用，通过引进恢复系数，导出了适合于大变形运动（包括平动和转动）情况下，颗粒体间的滑移和分离的宏观弹塑性本构关系。最后，还给出了几种规则排列条件下，颗粒介质的本构关系。

STUDIES ON THE DYNAMIC PROPERTIES FOR GRANULAR MEDIUM UNDER STRESS WAVE

In this paper,taking into account the topological structure and local nonlinear dynamic interaction of interparticles and introducing coefficient of restitution,an macro-elasto-plastic relation with sliding and seperation of particles under large deformation is derived with the multiple rigid dynamics and micro-mechanics approach. At last.the constitution relations are given for the special arrangements of the particles.