中国机械工程 ›› 2015, Vol. 26 ›› Issue (12): 1676-1683.

• 材料工程 • 上一篇    下一篇

基于改进模拟退火算法的复合材料层合板屈曲优化

孙士平;曾庆龙;吴建军   

  1. 南昌航空大学,南昌,330063
  • 出版日期:2015-06-25 发布日期:2015-06-29
  • 基金资助:
    国家自然科学基金资助项目(11362017);江西省教育厅科学技术研究项目(GJJ13520,GJJ13494) 
    National Natural Science Foundation of China(No. 11362017);
    Jiangxi Provincial Science and Technology Research Program of Ministry of Education of China(No. GJJ13520,GJJ13494)

Buckling   Optimization  of  Composite  Laminates  Based   on  Improved  Simulated Annealing  Algorithm

Sun Shiping;Zeng Qinglong;Wu Jianjun   

  1. Nanchang Hangkong  University,Nanchang,330063
  • Online:2015-06-25 Published:2015-06-29
  • Supported by:
     
    National Natural Science Foundation of China(No. 11362017);
    Jiangxi Provincial Science and Technology Research Program of Ministry of Education of China(No. GJJ13520,GJJ13494)

摘要:

针对复合材料层合板的屈曲优化问题,提出一种改进的直接搜索模拟退火算法来求解最大化临界屈曲载荷系数的铺层顺序设计问题。改进算法引入搜索范围动态调整的新点产生方式实现全局搜索和局部搜索的协调,提高了算法的计算稳定性和计算效率。以离散铺层角为设计变量,采用里兹法进行屈曲响应分析以考虑弯扭耦合影响,通过典型多极值屈曲优化问题分析比较了算法改进措施的有效性。不同角度增量、铺层数、长宽比和载荷比的层合板屈曲优化结果表明,改进算法能有效地进行层合板铺层顺序优化。

关键词: 屈曲优化, 模拟退火算法, 层合板, 里兹法, 优化设计

Abstract:

An improved direct search SA  algorithm  was presented to find globally stacking sequence design of symmetrically composite laminates with maximum buckling load.A new point generation mechanism was introduced into improved SA to enhance  the stability and efficiency of the algorithm,which the variational search area for generating new point was proposed to realize global and local search consistent.The design variable was as   discrete ply angle and buckling response of laminate was analyzed by Ritz method to consider the bend-twist coupling.A multiple-global optimal  problem known was explored to comparative investigate the performance of improved SA.Further,the numerical examples were conducted for different angle increments,layer  numbers,aspect ratio and load ratios,the results show that the presented algrothm is capable to optimize the stacking sequence of composite laminates.

Key words: buckling optimization;simulated , anealing(SA) algorrthm;composite laminates;Ritz , method;optimal design

中图分类号: