【摘要】 基于阻尼柔性连接装置的卫星结构悬浮式设计方案旨在既不降低结构完整性和支撑强度,又能为热应力提供释放空间,同时提供较高的阻尼以保证结构的振动抑制要求。文章从柔性连接的热应力释放机理出发,分析了影响卫星结构(主要是敏感仪器)热变形的主要因素,并且给出了复杂结构的设计准则。理论分析结果表明结构悬浮式设计方案可以有效改善敏感仪器的热变形情况,并且可以通过调整各部分的刚度来获得不同的抑制效果。最后通过实例证明了这种分析方法的有效性。更多还原

【Abstract】 Floating design method(FDM) with high damping flexible connectors(HDFCs) aims at both releasing thermal deformation and attenuating vibration of the sensitive payloads during satellite in-orbit phase,meanwhile,it can also prevent the reduction of structure strength.The effect on thermal deformation release of FDM was discussed.Based on the release theory of thermal stress by using FDM,the function of the flexible connections on structure′s thermal deformation was studied.And the thermal deformation of satellite structure,mainly the sensitive part,was analyzed and some design criteria was listed.Results show that FDM is quite effective on reducing payload′s thermal deformation,and its effect is greatly dependent on HDFC′s stiffness.Finally,the validity of the proposed analysis method was proved by numerical examples.更多还原