行波输入下土层有限元网格的划分原则

Partition principle of the finite element meshes of soil under traveling wave excitations

在行波输入下,用有限单元法分析土层地震反应时会遇到土层与基岩接触面如何离散化的问题。文中指出了在此情况下传统的有限元网格划分中存在的问题,并结合数值试验给出了沿行波输入方向进行土层有限元网格划分的原则。

Under traveling wave excitations, how the surface between soil and rock is divided by the finite element method in the seismic response analysis of soil, which is an impertant problem. The drawback of the tradition method dealing this problem is pointed out in this paper. Based on the results of numerical experiments, the principle of determining the dimension of the finite element meshes of the soil analysis model under traveling wave excitations is studied.