力学映射下板壳结构的截面离散优化设计

DISCRETE OPTIMIZED DESIGN OF SHELL STRUCTURES BASED ON MECHANICS MAPPING

依据力学映射的方法把离散变量优化问题转换为连续变量优化问题,通过在连续优化最优解附近构造两节模型,采用无穷小单元的无穷组合方法和变量连接术对板壳结构进行优化。同时在MSC公司的Nastran软件平台上利用其PCL语言开发出优化模块,并进行了算例的优化设计。

Discrete optimization is converted into continuous optimization using mechanics mapping. A two-node model is constructed close to the optimal result of continuous optimization. The optimization of shell structures is thus achieved using variable linking and the infinitesimal multiple-node element. Meanwhile discrete optimization module is developed with PCL language based on Nastran software and several examples are optimized.