响应面法在机匣螺栓连接结构多目标优化中的应用  

Multi-Objective Optimization of Bolted Joint for Casing Based on Response Surface Method

作　　者：艾延廷[1] 武威[1] 陈勇[1] 

机构地区：[1]沈阳航空航天大学辽宁省航空推进系统先进测试技术重点实验室,辽宁沈阳110136

出　　处：《机械设计与制造》2013年第12期224-227,共4页Machinery Design & Manufacture

基　　金：航空科学基金资助项目(2008ZB54006)

摘　　要：将有限元法和最优化方法结合起来,可以很好地实现航空发动机机匣螺栓连接结构的多目标优化设计。结合正交实验设计和响应面法来确定螺栓连接结构的几何尺寸组合,利用APDL语言对不同参数组合条件下的螺栓连接结构进行参数化建模和应力场分析,获取最大等效应力和质量的响应面模型,然后通过多目标模糊优化设计方法计算该结构的最优几何参数。计算结果表明,优化结构参数后的螺栓连接结构最大等效应力比原结构下降了23.5%,质量减轻了6.2%,这为机匣结构设计和发动机减重提供可靠的参考依据。The multi-objective optimization of bolted joint for Aero-engine Casing can be performed well by using finite element method and optimization method. The orthogonal experimental design and response surface design were combined together to determine the combination of geometrical parameters to be designed of the bolt connection structure. The parameter modal and stress of bolt joint which had different geometrical parameters were simulated and analyzed by using APDL language. The response surface modal of maximum equivalent stress and mass were obtained. The optimal structural parameters of bolted joint were obtained by using the method of multi-objective fuzzy optimal design. The results showed that the maximum equivalent stress in the optimized bolted joint is lower 23.5% than that the original one and the mass of optimized one is lower 6.2% than that the original one, which offer reliable references to the structure design and the weight reduction of aero-engine casing.

关 键 词：航空发动机机匣 螺栓连接结构 有限元法 正交实验设计 响应面法 响应面模型 多目标模糊优化设计 

分 类 号：TH16[机械工程—机械制造及自动化] V232.7[航空宇航科学与技术—航空宇航推进理论与工程]