粘弹性阻尼边界结构板对微振动抑制研究
Study on Micro-vibration Suppression of Viscoelastic Damped Boundary Structure Plate
盛骞 1李昊 2潘殿坤 1伍章明1
作者信息
- 1. 冲击与安全工程教育部重点实验室,浙江宁波 315211
- 2. 上海卫星工程研究所,上海 200000
- 折叠
摘要
为了解决微振动对卫星高精度仪器的影响,设计一种结合了粘弹性阻尼材料和超结构的隔振器,并将该隔振器与卫星结构板结合形成具有弹性边界的结构板.采用有限元方法探究隔振器的力学性能,建立弹性边界板的理论模型,对弹性边界板的固有频率和振型做预测,验证弹性边界结构板相比于固支边界结构板在满足实际工作强度需求下,能够对卫星微振动有更良好的抑制效果.相比于结构板固定的整星,具有弹性边界结构板所构成的整星可以降低90％的微振动传递效果.
Abstract
In order to solve the influence of micro-vibration on satellite high precision instrument,a vibration isolator with viscoelastic damping material and superstructure is designed,and the vibration isolator is combined with the satellite structure plate to form a structure plate with elastic boundary.The mechanical properties of vibration isolator were investigated with the finite element method.The theoretical model for elastic boundary plate is established and the natural frequency and mode shape of the elastic boundary plate are predicted.It is verified that the elastic boundary structure plate can suppress the satellite micro-vibration better than the fixed boundary structure plate under the actual working strength requirements.Comparing with the whole star with fixed structure plate,the whole star with elastic boundary structure plate can reduce the micro-vibration transmission effect by 90％.
关键词
微振动/粘弹性隔振器/弹性边界条件/振动抑制Key words
micro-vibration/viscoelastic vibration isolator/elastic boundary condition/suppression of vibration引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据