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本文对离散单元法的一些基本问题进行了研究，给出了刚度计算公式，提出了两种新的用于求解静态问题的自适应阻尼，并以自由落体运动为例，探讨了中心差分法、Ｗｉｌｓｏｎθ法和Ｎｅｗｍａｒｋ法对离散单元法解的影响。
In this paper, some basic problems of discrete element method are studied, and the formula of stiffness is given. Two new adaptive damping methods for solving static problems are proposed. Taking free-fall motion as an example, the central difference method, Influence of Wilson θ Method and Newmark Method on Discrete Element Method.