某机发动机减振安装前后全机典型部位减振效果的仿真分析

建立发动机、发动机安装结构、机体一体化的有限元模型,可全面考察发动机安装结构动力优化设计的成效。从理论上计算分析出由于安装阻尼减振装置,在全机各典型部位的减振优化设计的效果。 本文主要介绍一体化有限元建模、计算模型的拼装以及发动机减振安装前后全机典型部位减振效果的分析等。从响应曲线对比可以看到:前设备舱、座舱和后设备舱等典型部位的响应在安装减振连接杆前后变化较大,总体下降了约15％,表明了它能够成功地抑制航空发动机造成的峰值响应。

ARTIFICIAL ANALYSIS ON PURPOSE OF DECREASE VIBRATION FOR THE MODEL PLACE OF THE AIRCRAFT BEFORE/AFTER ENGINE WITH A DAMPER

Upbuild the incorporate finite element model for the engine, engine install and aircraft stracture, May entirely seeing about the effect for dynamical optimize design of engine install stracture. Theoretically calculate and analyses the effect for dynamical optimize design of the type place of the aircraft due to setting damp reduce thingamy.The text mostly introduce the incorporate finite element model, the spelling of the model as well as the analyses of the reduce effect for the type place of the aircraft due to setting damp thingamy. Can glimpse from contrast with the response curve, which die response at type place of the front and back cabin and seat cabin have great change, for install the decrease shake pole. And its response descend about 15% , so that the peak value of the response for engine install triumphantly controled.