带接触单元、多级加载的有限元网格局部加密方法及工程应用

Local Mesh Densification Method for FEM with Interface Element and Multi-loads and Its Application

针对土工有限元计算中,通常网格中包含接触单元,并且考虑多级加载的实际情况,文中给出了一种实用的网格局部加密算法,该算法简单实用,加密后的网格有较好的半带宽,并且合理解决了多级加载对网格编号的特殊要求。作者使用C++Builder开发工具编制了加密程序,并且在一个非线性及弹塑性比奥固结平面有限元程序中得到了验证。

In this paper a practical local mesh densification method, which can deal with the problems in the field of soil project FEM that usually includes interface element and multi-loads is given. This method is not only simple ,but also practical. The mesh grid after densification has good half-bandwidth and accords with the requirement of multi-loads. At last, the author writes a mesh densification program and it is shown in a real project that this method is correct and very useful.