摘要
新型被动在轨非连接支撑(简称PODS)发射和在轨时主要功能元件接触状态不同,其传热路径不同,漏热量也就不同。针对支撑结构发射及在轨时,热应力、惯性载荷及贮箱重量对其漏热的影响,利用ANSYS Workbench中热-结构耦合方法对支撑结构进行分析,得到PODS温度分布、热流分布及不同接触状态下的漏热量。结果表明,不同接触状态下,热变形及漏热量均不同。热变形是热应力和结构应力共同作用的结果,其中,热应力是影响热变形的主要因素。
Novel Passive Orbital Disconnect Strut （PODS）has different contact status during launch and on -orbit stages, so the heat leak will be different because of the different heat transfer path. For the problem of heat leak affected by the thermal loads, inertial load and tank weight during launch and on - orbit stages, the ANSYS workbench thermal - structure coupled method was used to analyze the thermal performance of PODS, the temperature distribution and heat flux distribution of PODS were obtained, then, the heat leak of PODS under different contact states was also calculated. The results show that heat deformation and heat leak are different under different contact states. The thermal deformation of PODS is caused by the thermal and structural loads, and the thermal load is the key factor influencing the thermal deformation.
出处
《低温与超导》
CAS
北大核心
2014年第3期11-15,共5页
Cryogenics and Superconductivity
基金
真空低温技术与物理重点实验室开放基金项目(ZDK201103)资助
