摘要
[目的]为合理评估防爬器吸能可靠性指标,提出了一种基于ISSSM(改进正弦和代理模型)的吸能可靠性分析方法。[方法]首先,建立防爬器碰撞有限元模型并对其碰撞过程进行仿真;其次,基于防爬器碰撞试验数据对有限元仿真模型合理性进行验证,进而依据构建原理,明确防爬器碰撞过程力-位移函数基本形式,并根据吸能一致性准则,构建防爬器吸能ISSSM,从而结合可靠性理论,建立防爬器吸能可靠性分析模型;最后,以某型号防爬器为研究对象,并对其吸能可靠性指标进行评估。[结果及结论]构建的吸能ISSSM能够合理复现防爬器碰撞吸能过程的力学特性;变异系数自0.05提升至0.10时,吸能可靠性指标自3.07降低至1.53。
[Objective]To reasonably evaluate the energy absorption reliability index of anti-climber devices,a reliability analysis method based on ISSSM(improved sinusoidal and surrogate model)is proposed.[Method]Firstly,a finite element model for anti-climber device collision is established.Secondly,the rationality of the finite element simulation model is verified based on the collision test data of the anti-climber device.Then,based on the principles of sum of sine function construction,the basic form of the force-displacement function for the anti-climber device collision process is clarified.According to the energy absorption consistency criterion,the anti-climber device energy absorption ISSSM is constructed.Combining reliability theory,a reliability analysis model for anti-climber device energy absorption is established.Finally,a specific model of anti-climber device is studied,and its energy absorption reliability index is evaluated.[Result&Conclusion]The constructed energy absorption ISSSM can reasonably reproduce the mechanical characteristics of the anti-climber device collision energy absorption process.When the coefficient of variation increases from 0.05 to 0.1,the energy absorption reliability index decreases from 3.07 to 1.53.
作者
曹阳
梁晓珂
张越
王强
姚成勇
曲通
CAO Yang;LIANG Xiaoke;ZHANG Yue;WANG Qiang;YAO Chengyong;QU Tong(CRRC Nanjing Puzhen Co.,Ltd.,210031,Nanjing,China;Nanjing CRRC Puzhen Rolling Stock Co.,Ltd.,Nanjing,China)
出处
《城市轨道交通研究》
北大核心
2024年第5期67-72,共6页
Urban Mass Transit
关键词
轨道车辆
防爬器
碰撞
可靠性
正弦和函数
优化
rail vehicle
anti-climber
collision
reliability
sum of sine function
optimization
