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车体隔热结构的特性是评价高速列车车体质量的一个重要性能参数。以刚度、隔热与质量为指标,针对地板、侧墙及平顶等车体结构,通过参数优化降低型材厚度(增加玻璃棉毡的厚度)来提高隔热性能,通过拓扑优化改善传力路径,提高刚度性能,给出了各结构的优化结果。在可制造化处理的基础上,通过有限元仿真,刚度、隔热与质量性能均得到了提高,验证了所提出方案和方法的有效性。本文为高速列车车体隔热结构的设计提供了一种新途径。
The characteristics of body insulation structure is an important performance parameter to evaluate the body mass of high-speed train. Taking the stiffness, heat insulation and quality as the indexes, the heat insulation performance is improved by optimizing the thickness of the profile (increasing the thickness of the glass wool felt) through parameter optimization for the vehicle body structure such as the floor, the side wall and the flat roof, and the force transmission path is improved by topology optimization , To improve the stiffness performance, given the structure of the optimization results. Based on the manufacturable process, the stiffness, heat insulation and quality performance are all improved through finite element simulation, which proves the effectiveness of the proposed scheme and method. This article provides a new way for the design of high-speed train body insulation structure.