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| Chaos optimization method and improvement in structural designs |
| Revised:April 10, 2003 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20051014 |
| KeyWord:chaos,structure optimization,mutative scaling |
| ZHAO Guo-zhong,ZHENG Yong-gang,GU Yuan-xian~*uipment,Dept. of Engineering Mechanics,Dalian University of Technology,Dalian 116024,China) |
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| Abstract: |
| Based on the research of the mutative scaling chaos optimization, considering the characteristic of the structure optimization, an improved chaos optimization method is proposed in order to solve optimization problems with various constraint conditions in the structural design. The method proposed in this paper has been implemented in the software JIFEX of the finite element analysis and design optimization of general purposed structures. Analysis of numerical examples shows that chaos optimization method is feasible in structure design optimization and the improved chaos optimization method presented in this paper is effective. The following three conclusions useful to application of chaos optimization in structural design are found: 1) Mutative scaling chaos optimization method can be used to solve the problem of design optimization. 2) When optimum result is near to the upper bound or low bound of design variable, the ideal optimum result cannot be gotten. The improved chaos optimization method presented in this paper is effective in dealing with this problem. 3) The global searching efficiency of the chaos optimization method is high, whereas the local searching efficiency is low. |
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