【作者】 胡卫兵； 杜保平； 李福强；

【Author】 HU Weibing DU Baoping LI Fuqiang (School of Civil Engineering Xi’an Univ.of Arch.& Tech.Xi’an 710055,China)

【机构】 西安建筑科技大学土木工程学院；

【摘要】 本文利用遗传算法对结构进行优化时,将ANSYS作为有限元结构分析工具,将遗传算法优化程序与结构的有限元分析程序结合起来,在这两个程序中进行数据传递,遗传算法与ANSYS结构分析软件相结合能大大节约结构优化问题的求解时间,提高计算结果的可靠性。本文针对简单遗传算法具有"收敛早熟"、局部搜索能力差等缺点,提出了改进的遗传算法。本文对于遗传算法控制参数对遗传算法的影响进行了分析,得出一些控制参数选择的结论。算例表明此方法正确、可行,能充分发挥ANSYS与遗传算法两者的长处,具有优化效率高、效果好、实用性强等优点。更多还原

【Abstract】 This paper uses ANSYS instead of compiled procedure to optimize structures,to combine genetic algorithm optimization procedure with the structure finite element analysis procedure,making the data transmit between the two procedures.Thus,the combination can save a lot of time and improve the reliability of result.Simple genetic algorithm is characterized by" Premature Convergence (PC)" and weakness in local search.Considering the disadvantage of GA,this paper proposes to improve genetic algorithm,diversifying the initial populations,to avoid PC and improve optimization efficiency and quality.This paper combines genetic algorithm with ANSYS to optimize computation of the two kind typical structures.The result indicates this method,being correct and feasible,can fully display the merits of both ANSYS and the genetic algorithm.All in all,higher efficiency,better result and stranger usability are their merit更多还原