Design and Structural Analysis of Two Kinds of Liquid Nitrogen Vessel for High Temperature Superconductor Maglev Vehicle
Design and Structural Analysis of Two Kinds of Liquid Nitrogen Vessel for High Temperature Superconductor Maglev Vehicle
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DOI：
10.1109/tasc.2010.2041438
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发表时间：
2010-03
影响因子：
1.8
通讯作者：
Jing Jiang;Lifeng Zhao;Gong Qin;Ye Yang;L. Qin;Zhiyuan Zhao;Yong Zhang;Yong Zhao
中科院分区：
文献类型：
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作者：
Jing Jiang;Lifeng Zhao;Gong Qin;Ye Yang;L. Qin;Zhiyuan Zhao;Yong Zhang;Yong Zhao
介绍了一种用于高温超导磁悬浮列车的双壳矩形薄壁液氮容器。其恶劣的工作条件，如急剧的低温和强磁场，决定了其特殊的结构。以容器的尺寸，特别是壁厚，由实验结果得到的最大悬浮力，金属和非金属材料的性能作为设计参数，进行三维有限元分析，以获得容器的最佳结构。对奥氏体不锈钢0Cr18Ni9Ti金属容器和高分子复合材料（PC）非金属薄壁容器进行了有限元分析。计算结果表明，PC非金属容器能够很好地满足高温超导磁悬浮车辆的要求。此外，PC非金属容器具有许多优点，如无涡流损耗，总重量轻，成本低，等等，由于有限元模型（FEM）被简化，数值计算的结果需要通过实验结果进行验证。而有限元分析作为预测模型应力和变形的有力工具，可以有效地指导和优化液氮容器的设计。
A double-shell rectangular-shape liquid nitrogen vessel with thin wall for high temperature superconductor (HTS) Maglev vehicle is described in this paper. Its severe working conditions, such as sharp low temperature and strong magnetic field, determine its special structure. Three dimensional finite element analysis (FEA) using dimensions of the vessel, especially thickness of the walls, the largest levitation force obtained from the former experimental results, properties of metallic and nonmetallic material as design parameters was conducted to obtain optimal structure of the vessel. FEA of austenitic stainless steel 0Cr18Ni9Ti metallic vessel and polymer composite (PC) nonmetallic vessel with thin wall were performed. Comparison of the calculation results of two kinds of vessel shows that PC nonmetallic vessel can well satisfy the requirements of HTS Maglev vehicle. Furthermore, PC nonmetallic vessel has many advantages such as no eddy current loss, lesser total weight and lower cost, etc. Due to the finite element model (FEM) being simplified, the results of the numerical calculation should be verified by experimental results. Whereas, FEA as a powerful tool to predict stress and deformation of the model, it can guide and optimize the design of the liquid nitrogen vessel effectively.