大挠度复合夹心板弯曲问题的半解析有限元法

本文首先对复合材料夹心板进行了刚度分析，建立了其等效组合刚度系数．然后，利用半解析有限元法沿板宽度方向进行有限元离散，而沿长度方向采用深梁振型函数，建立了位移函数，推导了大挠度情况下的平衡方程．通过实例计算，本文方法精度较高且自由度少．

Semi-Analysis Finite Element Method for the Composite Material Sandwich Plates with Large Deflections

In this Paper, the authors first analyze the elastic stiffness of composite material sandwich plates, and the equivalent composite stiffness factors are established. Then, using a semi-analysis finite element method, the authors set up the displacement functions and derived the,governing equations by divorcing this plate along its width and adopting the vibration functions of thick beams along its length and thickness. Furthermore, an example has been computed with this method. It has been found that the precision of proposed method is better and its freedoms are less than other numerical methods.