复合材料厚板结构三维有效弹性常数计算模块化程序

为实现复合材料厚板结构三维有效弹性常数的模块化计算，利用MSCPatran的二次开发语言PCL开发模块化计算程序．针对具有周期性铺层方式的复合材料厚板结构，该程序可自动生成等效后的三维正交各向异性材料．将该程序用于复合材料太阳翼连接架的静力分析，生成连接架各局部复合材料结构的三维正交各向异性材料，得到其在设计载荷下的应变分析结果．有限元分析结果与试验结果比较表明，该程序能有效计算复合材料厚板结构的三维弹性常数，提高复合材料三维建模的效率及可靠性．

thick composite laminate; effective elastic constant; secondary development; MSC Patran; PCL; finite element analysis

To implement the modularized calculation of effective 3D elastic constants of thick composite laminate structures, based on MSC Patran platform, a modularized calculation program is developed by the secondary development language PCL of MSC Patran. The program can generate the equivalent 3D orthotropic anisotropy materials automatically for the thick composite laminate structures which are formed by periodically stacking sequence. It is applied to the static analysis on composite solar wing connecting frame, the 3D orthotropic anisotropy materials of all the local composite structures of connecting frame are generated, and the strain analysis results of the structures under design loading are obtained. The comparison of the finite element analysis result and the test result indicates that the program can effectively calculate the 3D effective elastic constants of thick composite laminate structures and improve the efficiency and reliability of 3D modeling on composite structures.