摘要
针对多相材料零件采用遗传算法进行选材优化时,由于初始人口数少,易导致算法早熟,无法获得全局最优解的问题,提出一种基于"家谱"的改进遗传算法,采用"家谱"来评定各染色体之间的亲缘关系,降低染色体近交繁殖概率。经计算实例验证,该法可有效解决上述问题,适于多相材料零件的选材优化。
When the optimization of material selection for components made of multiphase materials is performed with the help of genetic algorithm, the prematurity of algorithm is easy to be produced and the global optimization solution cannot be obtained, because the initial population is very few. An improved genetic algorithm based on ＂family tree＂ is put forward, in which ＂family tree＂ is used to evaluate the kinship of chromosomes and reduce the probability of chromosome inbreeding. Validation examples show that the problems mentioned previously are solved and the algorithm developed here is suitable for the optimization of material selection of components made of multiphase components.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2008年第3期220-227,共8页
Journal of Mechanical Engineering
基金
香港研究基金委资助项目(HKU7062/00E)。
关键词
多相材料零件
选材优化
家谱
改进遗传算法
Components made ofmultiphase materials Optimization of material selection Family tree Improved genetic algorithm
