In this paper, a new composite support made of steel and polymer is proposed for the internal supports of mobile cryogenic vessels. Multilayered design of the steel part in the presented support controls the heat transfer through this part by adding more thermal contact resistance (TCR) to the heat flow path. An analytical model is developed to calculate TCR between layers of the steel part at the support working pressure and temperature condition. A finite element (FE) model is also developed for the proposed support. Thermo-mechanical coupled and transient thermal analysis are performed on the FE model by ANSYS FE code to investigate heat transfer in the polymer and steel parts of the proposed composite support and a support made of polymer block. The effects of dynamic loading frequency and damping on the heat flux passing through the internal support are investigated for the new support design. Comparison of the heat flux results shows that the amount of heat transferred to the cryogenic tank through the internal supports decreases when using proposed composite design instead of polymer blocks not only in the static loading condition but also in the dynamic loading.

在本文中，提出了一种由钢和聚合物制成的新型复合支撑物，用于移动低温容器的内部支撑物。提出的支架中钢部件的多层设计通过向热流路增加更多的热接触电阻（TCR）来控制通过该部件的热传递。建立了一个分析模型，以计算在支撑工作压力和温度条件下钢零件各层之间的TCR。还为拟议的支持开发了有限元（FE）模型。通过ANSYS FE代码对有限元模型进行热力耦合和瞬态热分析，以研究所提议的复合支撑和由聚合物嵌段制成的支撑在聚合物和钢部件中的传热。对于新的支架设计，研究了动态加载频率和阻尼对通过内部支架的热通量的影响。热通量结果的比较表明，当使用建议的复合设计代替聚合物嵌段时，不仅在静态载荷条件下而且在动态载荷下，通过内部支撑传递到低温罐的热量都减少了。