摘要
飞机结构中连接耳片数量众多,在满足耳片使用寿命前提下,降低其重量对飞机减重具有重要意义。文中以连接直耳片的最小重量和最大裂纹扩展寿命同时作为优化目标,利用遗传算法分别对有、无干涉衬套直耳片进行多目标优化设计,以使耳片在满足裂纹扩展寿命要求的前提下重量最轻。给出不同目标权重下的最优结果曲线,为工程中基于损伤容限设计思想的连接耳片设计提供参考。
There are many lugs in airplane structures,so it is very importance for airplane weight that lugs weight is reduced on the condition of meeting the service life of lugs.The smallest weight and maximal crack growth life of the straight lug were as the optimization goals.Then using the genetic algorithm,multi-objective optimization design was taken for the straight lug with or without interference bush,respectively,in order that lug weight is lightest on the premise of meeting the crack growth life.The optimi...
出处
《机械强度》
CAS
CSCD
北大核心
2010年第6期928-932,共5页
Journal of Mechanical Strength
关键词
损伤容限
裂纹扩展寿命
多目标优化设计
遗传算法
Damage tolerance
Crack growth life
Multi-objective optimization design
Genetic algorithm
