基于随机有限元的立柱可靠性形状优化设计

Reliability-based Shape Optimization of Column Based on Stochastic Finite Element

基于确定性有限元分析的结构形状优化没有考虑设计变量的随机性,不能够反映结构的真实状况。为解决这个问题,将可靠性设计的概念引入结构形状优化中。通过考虑设计过程中各变量的随机性,利用随机有限元方法,更加真实地模拟结构形态。并通过算例验证该方法的可行性。

Shape optimization of structure based on the definite finite element had not considered the design variable＇s randomness ; it cannot reflect the real condition of structure. In order to solve this problem, apply the concept of reliability design to shape optimization for structure. Consider the randomness of various in design process, use stochastic finite element method, simulates the structure shape more really. Confirms the feasibility of this method by an example.