摘要
栅格加筋板的主要失效形式为整体屈曲和局部屈曲,据此提出了一种栅格加筋板布局的并行协同优化方法,将设计变量分为整体设计变量与局部设计变量,在两个子空间中并行优化,然后进行系统级协调,反复迭代至收敛。两个典型算例结果表明,本文方法优化流程清晰、算法稳定且结果可靠,可以获得最优解。
Based on the fact that the main failure modes of a stiffened panel are global buckling and local buckling,a concurrent optimization method for the layout of the stiffened panel is proposed.The design variables are divided into global design variables and local design variables.The two groups of variables are optimized concurrently in two subspaces,and then coordinated at the system level until convergence by means of repeated iterations.Two typical examples are reported in this paper.The results show that the proposed method has a clear optimization process,stable algorithm and reliable outcomes,and can obtain an optimal solution.
作者
徐超
姚卫星
XU Chao;YAO Wei-xing(State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight Vehicle,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《计算力学学报》
EI
CAS
CSCD
北大核心
2019年第6期813-817,共5页
Chinese Journal of Computational Mechanics
关键词
栅格加筋板
布局优化
并行协同优化
整体屈曲
局部屈曲
stiffened panel
layout optimization
concurrent optimization
global buckling
local buckling
