Effect of viscous heating of the fluid damper on the whole-spacecraft vibration isolation

被引：2

作者：

He, Ling ^{[1
]}

Yang, Qingjun ^{[1
]}

Zheng, Gangtie ^{[2
]}

机构：

[1] School of Astronautics, Harbin Institute of Technology

[2] School of Aerospace, Tsinghua University

来源：

Jixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering | 2007年 / 43卷 / 09期

关键词：

Fluid damper; Temperature-dependent viscosity; Vibration isolation;

D O I：

10.3901/JME.2007.09.061

中图分类号：

学科分类号：

摘要：

During a launch mission, the fluid damper has different damping coefficient and resonance frequency for the fluid viscosity is a function of the fluid temperature. A thermodynamic model is established by considering the application of the fluid damper in the whole-spacecraft vibration isolation. And the frequency domain performances of the whole-spacecraft vibration isolation systems at some time intervals are numerically studied with different viscosity-temperature coefficients and different parameters. The theoretical analysis and experimental results show that with the past of the time, the temperature of the damper increased, and thus resulted in a shift of the resonance frequency and the changes of the resonance amplitude.

引用

页码：61 / 64

页数：3