基于改进正弦和代理模型的防爬器碰撞吸能可靠性分析
曹阳1梁晓珂1张越2王强1姚成勇1曲通1
Reliability Analysis of Collision Energy Absorption for Anti-climber Devices Based on Improved Sum of Sine Surrogate Model
CAO Yang1LIANG Xiaoke1ZHANG Yue2WANG Qiang1YAO Chengyong1QU Tong1
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作者信息:1.中车南京浦镇车辆有限公司， 210031， 南京
2.南京中车浦镇城轨车辆有限责任公司， 210031， 南京
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Affiliation:1.CRRC Nanjing Puzhen Co., Ltd., 210031, Nanjing, China
2.Nanjing CRRC Puzhen Rolling Stock Co., Ltd., Nanjing, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.05.014
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中图分类号/CLCN:U270.34
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栏目/Col:研究报告
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。
Abstracts:
［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.
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