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翼吊发动机安装结构等效建模及其隔振设计

许飞 贺尔铭 李景旭

许飞, 贺尔铭, 李景旭. 翼吊发动机安装结构等效建模及其隔振设计[J]. 航空动力学报, 2016, 31(8): 1905-1912. doi: 10.13224/j.cnki.jasp.2016.08.015
引用本文: 许飞, 贺尔铭, 李景旭. 翼吊发动机安装结构等效建模及其隔振设计[J]. 航空动力学报, 2016, 31(8): 1905-1912. doi: 10.13224/j.cnki.jasp.2016.08.015
XU Fei, HE Er-ming, LI Jing-xu. Equivalent modeling and vibration isolation design ofwing-mounted engine structure[J]. Journal of Aerospace Power, 2016, 31(8): 1905-1912. doi: 10.13224/j.cnki.jasp.2016.08.015
Citation: XU Fei, HE Er-ming, LI Jing-xu. Equivalent modeling and vibration isolation design ofwing-mounted engine structure[J]. Journal of Aerospace Power, 2016, 31(8): 1905-1912. doi: 10.13224/j.cnki.jasp.2016.08.015

翼吊发动机安装结构等效建模及其隔振设计

doi: 10.13224/j.cnki.jasp.2016.08.015
基金项目: 

航空科学基金(2012ZB53019)

详细信息
    作者简介:

    许飞(1982-),男,陕西宝鸡人,博士生,主要从事结构动力学分析及优化设计研究.

  • 中图分类号: V228.4

Equivalent modeling and vibration isolation design ofwing-mounted engine structure

  • 摘要: 为了研究翼吊发动机安装结构隔振特性并优化其隔振器设计,建立了发动机安装节-吊架-机翼结构理论分析及有限元模型.利用有限元方法进行了模态验证并分析了安装结构的隔振特性.进行发动机3种典型工况下的结构动响应分析确定了振动传递的主路径.基于振动传递路径法研究了隔振器参数和安装位置对安装系统隔振性能的影响规律.结果表明:振动载荷经安装结构后低压转子转频和高压转子转频峰值响应分别降低22.03%和14.65%.低压转子转频振动传递主路径为发动机-前安装节-吊架-机翼,高压转子转频为发动机-后安装节-上连杆-机翼.通过合理设置隔振器位置可以使安装系统隔振率达到50.41%,隔振器的频率比为5和阻尼比为0.25时安装系统隔振率可达70.67%.为了优化整个发动机安装系统的隔振效果,设计隔振器时必须选取合适的安装位置和参数.

     

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出版历程
  • 收稿日期:  2014-11-08
  • 刊出日期:  2016-08-28

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