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轨道车辆的设计中,高压电气设备和制动设备通常是悬挂在吊挂梁上,通过吊挂梁固定在车下。为了确定某地铁车辆下吊设备吊挂梁的结构形式,首先根据主要尺寸参数和性能指标设计吊挂梁的初始结构方案,并结合EN12663标准,利用有限元分析软件对其进行强度和刚度校验,以验证初始方案的可行性。然后对可行方案进行结构轻量化优化设计,最后对优化方案进行校核验证,得到满足各项性能指标的轻量化吊挂梁结构。计算结果表明,优化设计的吊挂梁结构能满足设计要求和性能指标,并且优化方案较初始方案减重达26.3%,满足了结构轻量化要求,为后续吊挂梁结构设计与优化提供了依据。
In the design of rail vehicles, high-voltage electrical equipment and braking equipment are usually suspended on the suspension beam and fixed under the vehicle by the suspension beam. In order to determine the structure of the suspended beam of a subway vehicle, the initial structure of the suspended beam is designed according to the main dimensions and performance indexes. The strength and stiffness of the suspended beam are verified by the finite element analysis software according to EN12663 , To verify the feasibility of the initial program. Then, the feasible scheme is optimized with lightweight design. Finally, the optimized scheme is verified and verified, and the lightweight beam structure satisfying various performance indexes is obtained. The calculation results show that the optimal design of the suspended beam structure can meet the design requirements and performance indexes, and the weight loss of the optimized scheme is 26.3% compared with the initial one, which meets the requirements of lightweight structure and provides the basis for the design and optimization of the subsequent suspended beam structure .