噪声与振动控制2019，Vol.39Issue(2)：206-209,221,5.DOI:10.3969/j.issn.1006-1355.2019.02.039
随机振动下偏心隔振系统仿真分析
Simulation Analysis of an Eccentric Isolation System under Random Vibration
杨强 1董万元 1邵闯2
作者信息
- 1. 中国飞机强度研究所 结构冲击动力学航空科技重点实验室, 西安 710065
- 2. 中国飞机强度研究所 结构冲击动力学航空科技重点实验室, 西安 710065
- 折叠
摘要
Abstract
The problem of eccentric airborne equipment is studied. Each mount load of the equipment is calculated by load decoupling, and the natural frequency, stiffness and damping of the isolation system are calculated. The finite element model is established for the isolation system in which the isolators are simplified as linear spring-dashpot elements. The acceleration response of the isolation system under random vibration excitation is analyzed by using base motion method. At last, stiffness and damping of the isolators are optimized according to test results. After the optimization, the error of the acceleration response in the Y direction of the system decreases from 44.95 % to 7.47 %; the error of the natural frequency decreases from 37.43 % to -0.25 %. And the errors in the other two directions decrease evidently. Therefore, an accurate dynamic model of the system is gained. This study provides an analysis method for eccentric airborne equipment isolation design under random vibration.关键词
振动与波/隔振系统/隔振器/基础运动/振动响应Key words
vibration and wave/ isolation system/ isolator/ base motion/ vibration response分类
航空航天引用本文复制引用
杨强,董万元,邵闯..随机振动下偏心隔振系统仿真分析[J].噪声与振动控制,2019,39(2):206-209,221,5.
