کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
499113 | 863027 | 2009 | 10 صفحه PDF | دانلود رایگان |
The success of genetic algorithms in structural design optimization depends largely on the geometric representation used. In this work, a geometric representation scheme using fat Bezier curve is proposed and evaluated to be efficient and effective in producing good results via a structure design problem subjected to uncertainty. This scheme facilitates the transmission of topological and shape characteristics across generations in the evolutionary process and amplifies the representation variability. A hybrid genetic algorithm coupled with the scheme to tackle structure topology optimization under uncertainty is also presented. The proposed hybrid algorithm integrates a simple local search strategy as the worst-case-scenario technique of anti-optimization with a constrained multi-objective genetic algorithm. Numerical results are also presented.
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 199, Issues 1–4, 1 December 2009, Pages 210–219