THE TOPOLOGICAL OPTIMIZATION FOR TRUSS STRUCTURES WITH STRESS CONSTRAINTS BASED ON THE EXIST-NULL COMBINED MODEL

摘要

＜正＞ A new exist-null combined model is proposed for the structuraltopology optimization.The model is applied to the topology optimization of the trusswith stress constraints.Satisfactory computational result can be obtained with morerapid and more stable convergence as compared with the cross-sectional optimization.This work also shows that the presence of independent and continuous topologicalvariable motivates the research of structural topology optimization.