Based on MSC/NASTRAN software, this paper uses the PATRAN/PCL (PATRAN Command Language) to secondly develop a new software of optimum design module for sectional optimization of truss structures.

• 本文利用MSC/PATRAN提供的PCL语言，针对桁架结构的截面优化对MSC/NASTRAN优化模块进行了二次开发。