中国空间科学技术

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航天器粘弹性悬挂减振装置的动力学分析

赵会光,马兴瑞,冯纪生   

  1. 北京空间飞行器总体设计部,中国航天科技集团公司,北京空间飞行器总体设计部 北京100086 ,北京100833 ,北京100086
  • 发布日期:2001-12-25

Dynamic Analysis of Suspended Equipments with Viscoelastic Boundary Isolators

Zhao Huiguang * Ma Xingrui ** Feng Jisheng * (*Beijing Institute of Space System Engineering,Beijing 100086 ) (**China Aerospace Science & Technology Corporation,Beijing 100833)   

  • Published:2001-12-25

摘要： 航天器上精密设备采用粘弹性减振器悬挂安装可获得显著的减振效果。对这类含有粘弹性边界安装阻尼的减振装置 ,结合弹性有限元及粘弹性边界阻尼的标准固体本构模型 ,导出了用于时域及频域分析基本运动方程。对时域运动方程给出了一种便捷的仿真求解方法 ,以仪表板悬挂减振装置为例进行了动力学仿真分析 ,并初步研究了粘弹性减振器特征参数的不同取值对减振性能的影响

关键词: 粘弹性, 减振装置, 动力学仿真, 航天器

Abstract: Vibration of high precision equipments in spacecraft can be greatly suppressed with viselastic isolators suspended.In this paper,basic motion equations used for time domain and frequency domain analysis on the kind of problems are derived by means of combining FEM of elastic body and standard solid model of viselastic materials.A convenient numeric simulation method on solution of time domain equation is also given.As a demonstration,dynamic simulation and analysis of instrument panel with viscoelastic isolators suspended are performed.The effects on vibration from characteristic parameters of viselastic isolators are also analyzed with pilot study.