考虑动静摩擦影响的可接触型裂纹动态响应的隐式算法

提出一种考虑裂纹面摩擦影响的可接触型裂纹动力反应的时域隐式计算方法。这一方法不但可以较好地描述裂纹面间的碰撞过程及反映动接触时裂纹面间动、静摩擦力的影响，而且使动接触问题分析中的系统矩阵成为对称型式，在弹塑性有限元迭代过程中，无需增加额外的迭代即可求得较好的结果。数值结果表明本文方法具有良好的稳定性和较高的精度。

An Implicity Method for Calculating the Dynamic Response of Elasto Plastic Connectable Crack Considering Effect of the Dynamic and Static Friction

An implicit method for analyzing the dynamic response of the connectable crack with friction in the crack surface is proposed in the paper. The method can not only be used to simulate the process of impact and the effect of dynamic and static friction in contact slide mode on the crack surface, but also to make the system matrix of dynamic contact problem symmetric. There needs no additional iteration in the iteration process of elasto plastic finite element method. The numerical results reveal that the method has enough accuracy and is stable.