风扇机匣的减振优化设计  

Optimization design of a fan casing for reducing vibration

作　　者：蔡显新[1] 肖新红 王涛[1] 吴志清[1] 

机构地区：[1]中国航空工业集团公司中国航空动力机械研究所,株洲412002

出　　处：《航空动力学报》2010年第2期396-401,共6页Journal of Aerospace Power

基　　金：航空基金(08B08003);国防科技创新团队项目

摘　　要：涡扇发动机风扇叶片的强大尾迹容易激起风扇机匣的高频行波共振.针对某涡扇发动机风扇机匣曾出现的振动过大的现象,分析了引起的原因,研究了减振措施,在此基础上提出了以减小振动为主要目的风扇机匣结构优化设计方法.机匣优化前后的整机试验测试结果表明,该方法是非常有效的.High frequency traveling vibration of a fan casing may be excited by the wake of rotating fan blades. High vibration level of a fan casing was observed during the test of a turbofan engine, the causes were analyzed, and the vibration-absorbing measures were investigated. Then, a casing structural optimization method for reducing vibration was proposed. Vibration experiments for casings before and after optimization were carried out. The results indicate that the optimization method is very efficient.

关 键 词：风扇机匣 行波振动 优化设计 叶片尾流 发动机试验 

分 类 号：V231.92[航空宇航科学与技术—航空宇航推进理论与工程]