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中高频激励下微振动流体阻尼器解析模型
Alternative TitleAnalytical model of micro vibration fluid viscous damper under medium and high frequency excitation
焦小磊; 马文来; 赵阳; 李思梁
Department机器人学研究室
Source Publication中国科学:技术科学
ISSN1674-7259
2017
Volume47Issue:12Pages:1273-1285
Indexed ByEI ; CSCD
EI Accession number20181905170587
CSCD IDCSCD:6150211
Contribution Rank2
Funding Organization国家重点基础研究发展计划(“973”计划)(批准号: 2013CB733004)资助项目
Keyword微振动 流体阻尼器 可压缩性 黏性损失 中高频 解析模型
Abstract航天器执行机构工作时产生的高频微幅扰振严重影响成像精度.针对中高频激励下微振动流体阻尼器,采用解析方法,考虑流体的压缩性及阻尼孔道内黏性损失,建立微振动流体阻尼器中高频激励下动力学解析模型,给出压差力在时域解析表达式,分析阻尼孔尺寸、流体黏度、激励幅值对动力学特性影响,结果表明,压差力中包含瞬态分量、阻尼力分量以及弹性力分量,阻尼力分量提供阻尼力,弹性力分量提供刚度,瞬态分量随时间衰减.孔径、孔长、阻尼液黏度变化会导致刚度和阻尼变化,激励幅值变化对刚度和阻尼没有影响.
Other AbstractMicro vibration is produced by CMG (control moment gyroscope) in the satellite, which has disadvantage for high precision payload. With consideration of compressibility of fluid and viscosity loss in the damping orifice, dynamic model of fluid viscous damper under medium and high frequency excitation is proposed. Based on this model, analytical solution of output force in the time domain is obtained. After that, dynamic characteristics of damper for different values of diameter, length, viscosity, amplitude are analyzed. The results reveal that output force can be divided into transient force, damping force, elastic force. Transient force decays with time quickly, damping force dissipates energy, elastic force provides stiffness. The values of stiffness coefficient and damping coefficient are decided by diameter, length, viscosity. Amplitude has no influence on the stiffness and damping.
Language中文
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/21496
Collection机器人学研究室
Corresponding Author赵阳
Affiliation1.哈尔滨工业大学航天学院
2.中国科学院沈阳自动化研究所
Recommended Citation
GB/T 7714
焦小磊,马文来,赵阳,等. 中高频激励下微振动流体阻尼器解析模型[J]. 中国科学:技术科学,2017,47(12):1273-1285.
APA 焦小磊,马文来,赵阳,&李思梁.(2017).中高频激励下微振动流体阻尼器解析模型.中国科学:技术科学,47(12),1273-1285.
MLA 焦小磊,et al."中高频激励下微振动流体阻尼器解析模型".中国科学:技术科学 47.12(2017):1273-1285.
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