Research on the elastic-plastic deformation of collision post based on ASME RT-2:2014 standard of U. S about metro vehicle carbody design. First,according to the collision post loading conditions,determine the technical route for design,calculation and test;Secondly,the establishment of FEA calculation model of collision post,according to the load requirements and boundary conditions,study analysis of the deformation stress and displacement;Finally,based on design structure and FEA result start the elastic-plastic test,then the calculated data and the test data are compared and analyzed,a very uniformity consistent with the data. U-sing the latest standards for the design and research of collision post,it is the first time in the world that the re-search route of this paper can be used to study further.%基于最新美国地铁车体设计标准ASME RT-2:2014,研究车体前部防撞柱弹塑性变形的规律.首先,确定防撞柱承受载荷的条件,根据载荷条件归纳设计、计算和试验的基本技术路线;其次,建立防撞柱弹塑性计算的有限元模型,根据载荷要求与边界条件,分析防撞柱弹塑性变形的力及位移的变化规律;最后,基于设计结构进行弹塑性试验,对比试验结果与计算分析的一致性.采用ASME RT-22014标准设计和研究防撞柱弹塑性问题,可为同行学者进一步进行技术研究提供参考.
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