摘要
简支多边形薄板双调和定解问题可分解为二个互不耦合的Ｐｏｉｓｓｏｎ方程的定解问题，通过比拟，可用二维平面应力（应变）单元进行有限元分析。数值算例表明，本文采用的方法在较粗的网格下即可得到较高的精度，而且具有速度快、占用计算机内存少等优点。
The bi-harmonic equation of simply supported thin polygonic plates is decomposed into two Poissn’s equations,and a finite element analysis method using plane stress(strain)ele-ment is obtained.Numerical results show many advantages:high accuracy,high speed and low computer memory.
