任意基础板的有限元分析

Finite element analysis of arbitrary plates on ground

假定基础板对地基的作用为一连续分布荷载 ,采用 16节点退化实体等参元对基础板进行有限元分析。实体退化等参元不仅能够比较精确地描述基础板的平面形状 ,而且特别适合于变厚度基础板的有限元分析。Winkler地基上的板和弹性地基上的板的数值算例表明 ,本文方法适用于厚、薄基础板的分析 ,且具有精度高。

The contact force between plates and ground is treated as a continuous function, and the 16node degenerated isoparametric element is proposed for the analysis of plates on ground. The degenerated element can properly describe the shape and thickness variety of the plates. The connection with corresponding solid element is convenient for no rotation degree of freedom . Furthermore, the horizontal stiffness of the ground can be considered easily. The numerical results show that this element is powerful for thin and thick plates on ground and the method can give good results.