刨削式防爬器的吸能特性及防爬性能研究

Research on Energy Absorption Characteristics and Anti-climbing Performance of Planing Anti-climber

刨削式防爬器的防爬性能直接影响其吸能的稳定性。基于EN 15227:2020《铁路应用-铁路车辆车体的耐撞性要求》,采用LS-DYNA软件的大变形碰撞仿真分析技术建立有限元模型,对刨削式防爬器的吸能特性和防爬性能进行研究,再通过刚性墙碰撞试验验证刨削力与压缩行程的关系,通过垂向加载试验测量残余塑性变形进而验证防爬器的防爬性能。研究表明:刨削式防爬器的吸能特性及防爬性能良好;仿真分析与试验结果误差在20%以内,具有较好的一致性,仿真分析结果真实可信,防爬性能研究方法实用可行。

The anti-climbing performance of planing anti-climber directly affects the stability of its energy absorption.According to EN 15227:2020 Railway Applications-Crashworthiness Requirements for Rail Vehicles,the large deformation collision simulation analysis technology of LS-DYNA software is used to establish the finite element model,the energy absorption characteristics and anti-climbing performance of plan-ing anti-climber are studied.Then,the relation between plan-ing force and compression stroke is verified by the rigid wall crash test,and the residual plastic deformation is measured by the vertical loading test to verify the anti-climbing performance of anti-climber.Research shows that the anti-climbing performance and energy absorption characteristics of planing anti-climber are good.The error between simulation analysis and test is within 20%and has good consistency.The simulation analysis results are credible,and the research method of anti-climbing performance is practical and feasible.