摘要
为了提高被动在轨非连接支承(PODS)对侧向力的阻抗性能,减小低温贮箱通过PODS的漏热量,建立了带纤维丝的被动在轨非连接支承(PODS-IV)和无纤维丝的被动在轨非连接支承(PODS-III)结构三维模型,运用ANSYS workbench有限元软件,对带纤维丝的PODS-IV结构与无纤维丝的PODS-III结构分别进行了侧向力阻抗性能数值模拟计算,得到了侧向力作用在不同位置处两种支承结构各自所能承受的侧向力临界值,以及发生热短路时接触面位移变形云图。结果表明:带纤维丝的PODS-IV较不带纤维丝PODS-III能承受更大的侧向力而不发生热短路,同时随侧向力作用点离冷端距离增加,侧向力临界值相应增大。说明PODS-IV具有更好的支承性能及空间适用性。
In order to improve the side-load resistance ability of Passive Orbital Disconnect Strut（ PODS）,and reduce the heat leakage of cryogenic tank by PODS,three-dimensional model of Passive Orbital Disconnect Strut with filaments（ PODS-IV） and Passive Orbital Disconnect Strut without filaments（ PODS-III） were established. The numerical simulation of side-load resistance abilities was analyzed on PODS-IV with filaments and PODS-III without filaments by using ANSYS workbench. Then the maximum side-load critical values of two struts at different locations,as well as the conical surface deflections respectively were obtained. The results show that,PODS-IV with filaments could support more side-load than PODS-III and have no thermal shorting. At the same time,with the increase of distance between side-load applied location and cold rod-end,the side-load critical value of PODS-IV increases accordingly. It shows that PODS-IV has better support ability and space applicability.
出处
《低温与超导》
CAS
北大核心
2016年第3期6-9,64,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
关键词
漏热
侧向力
热短路
Heat leak
Side-load
Thermal shorting
