<The Combined Finite-Discrete Element Method>书中的源代码，用于颗粒材料的仿真计算。-<The Combined Finite-Discrete Element Method> The book' s source code for the simulation of granular materials.

有限离散程序 ，用于离散元书本代码学习，入门非常放便(Finite discrete program for discrete element book code learning, the entry is very convenient)