Vibration Control of Spacecraft Instrument Board by Kagome Sandwich Plate with Viscoelastic Dampers

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Vibration Control of Spacecraft Instrument Board by Kagome Sandwich Plate with Viscoelastic Dampers

更新时间：2025-07-09

- Vibration Control of Spacecraft Instrument Board by Kagome Sandwich Plate with Viscoelastic Dampers
- Vol. 46, Issue 7, Pages: 128-134(2012)
- 作者机构：
  
  西安交通大学机械结构强度与振动国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： O324
- Online First：10 July 2012，
  
  Published：2012
- 稿件说明：
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Vibration Control of Spacecraft Instrument Board by Kagome Sandwich Plate with Viscoelastic Dampers[J]. 2012, 46(7): 128-134.
DOI：

Vibration Control of Spacecraft Instrument Board by Kagome Sandwich Plate with Viscoelastic Dampers[J]. 2012, 46(7): 128-134. DOI：

摘要

为了实现航天器仪器安装板的振动控制

建立了采用Kagome夹心板制作的仪器安装板的有限元模型

并选用一种圆柱形黏弹性阻尼器

通过Biot模型建立了该阻尼器的有限元模型; 计算了各阶模态中Kagome平面桁架的模态应变能在结构总模态应变能中所占的比例

将其作为模态可控度

再结合给定载荷情况下的模态位移来确定需要控制的模态

由此提出了一种利用模态应变能比来控制多模态振动的阻尼器布置方案.特征值分析及时域响应数值模拟表明

该阻尼器布置方案只需使用很少数量的阻尼器

便可以显著增加较宽频带内所有模态的阻尼比

而且对于其他模态的振动也有一定的抑制作用.

Abstract

To realize vibration control of instrument board in spacecraft apparatus cabin

a finite element model of instrument board with Kagome sandwich plate is constructed

a kind of cylindrical viscoelastic damper is chosen and the corresponding model is established following the Biot model. In every modal the ratio of modal strain energy in Kagome truss to the whole one in structure is calculated as the degree of modal controllability

which is combined with modal displacement in given loads to determine the modals ought to be controlled. And a damper placement scheme of multi-modal control is proposed according to the fraction of modal strain energy. Eigenvalue analysis and numerical simulation in time domain response show that a few dampers enable to significantly increase the damping ratios of the controlled modals in a broad bandwidth and the vibration in other modals is also suppressed to a certain extent.

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references

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