Scholarlink

<p>To address the challenges of evaluating structural safety margins under complex aerodynamic loads across typical operating conditions of high-speed maglev trains, this study establishes a comprehensive finite element model (FEM) of the train body, incorporating aluminum alloy loadbearing frames, sandwich structures, and connecting components. The structural strength is analyzed under four representative scenarios: tunnel entry, 500 km/h without crosswind, 500 km/h with 10 m/s crosswind, and 500 km/h with 33 m/s strong crosswind. Von Mises stress distributions of key components are obtained via simulation and compared with the yield stress of typical aluminum alloys to assess safety margins. Results show that the overall train body structure does not yield under any condition, thus meeting the static strength design requirements. However, under strong crosswind, significant stress concentrations occur in areas such as door posts, the lower front section of the train head, and floor structures, where local stresses approach the yield limit, indicating design weaknesses. Optimization recommendations for these weak regions are proposed, providing both a theoretical basis and an engineering reference for structural safety assessments under complex scenarios involving high-speed maglev trains.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Strength Calculation and Analysis of High-Speed Maglev Train Car Body Considering Aerodynamic Loads

  • 期刊论文

  • 发表日期：

    2026年7月4日

查看全文
  • D. G. Gao,
  • Z. Q. Bai,
  • Y. Xu,
  • J. Liu,
  • Y. G. Sun

摘要

To address the challenges of evaluating structural safety margins under complex aerodynamic loads across typical operating conditions of high-speed maglev trains, this study establishes a comprehensive finite element model (FEM) of the train body, incorporating aluminum alloy loadbearing frames, sandwich structures, and connecting components. The structural strength is analyzed under four representative scenarios: tunnel entry, 500 km/h without crosswind, 500 km/h with 10 m/s crosswind, and 500 km/h with 33 m/s strong crosswind. Von Mises stress distributions of key components are obtained via simulation and compared with the yield stress of typical aluminum alloys to assess safety margins. Results show that the overall train body structure does not yield under any condition, thus meeting the static strength design requirements. However, under strong crosswind, significant stress concentrations occur in areas such as door posts, the lower front section of the train head, and floor structures, where local stresses approach the yield limit, indicating design weaknesses. Optimization recommendations for these weak regions are proposed, providing both a theoretical basis and an engineering reference for structural safety assessments under complex scenarios involving high-speed maglev trains.