Method for Sectional Optimization of Membrane Structure with Discrete Variables
Sui Yunkang,Wang Detian,Ye Hongling,Du Jiazheng
(Numerical Simulation Center for Engineering, Beijing University of Technology, Beijing 100022, China)

Abstract: The sectional optimization of membrane structure with discrete variables is investigated mapping the sectional discrete variables to continuous varia bles. A two-stage model is established near the optimal solution of sectional optimization of continuous variables, and the quite small element method associated with the dimensionless variable technique is adopted, then the optimized model with constraints of size stress and displacement under multi-loadings is obtained. The secondary exploitation of the special program on MSC. Patran and MSC. Nastran is carried out, the numerical examples demonstrate high efficiency of the method and feasibility of secondary development.
Keywords: discrete variables, continuous variables, two-stage model, dimen sionless technique, membrane structure.