摘要
在航天工程领域 ,减振技术得到了越来越广泛的应用。本文利用功率流理论对航天工程中典型减振连接结构的减振特性进行了研究。针对卫星平台结构的构成 ,给出了星上减振连接结构通用的子结构描述方案 ,并基于子结构导纳综合方法推导出规范化的振动功率流计算模型。最后 ,以某星上仪表板的简化悬挂减振模型为例进行了算例仿真和分析 ,并从功率流角度解释了减振机理。结果表明 ,航天器连接结构减振特性的功率流分析方法能够准确全面地指导和验证减振设计 ,满足工程上的精度要求 。
Vibration control technologies have wide applications in the field of spacecraft engineering.Using power flow theory,the vibration damping characteristics of typical interconnected structures in spacecraft engineering are studied in this paper.For the construction of satellite platform structure,an universal substructure description on damping joints in spacecraft is given.Normative calculation models of vibration power flow are deduced based on mobility synthesis method of substructures.As a demonstration,simple model of suspended instrument panel is used as an example for vibration power flow analysis and simulation.Vibration suppression mechanism is also explained from the viewpoint of power flow concepts.The results indicate that vibration power flow analysis method can accurately instruct and examine the vibration damping characteristics of interconnected structures in spacecraft and meet the requirements of engineering application.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2001年第6期64-71,共8页
Journal of Astronautics
关键词
减振
功率流
航天器
连接结构
Vibration damping
Power flow
Spacecraft
Mobility synthesis
