Reliability Analysis of Collision Energy Absorption for Anti-climber Devices Based on Improved Sum of Sine Surrogate Model
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 5
Abstract
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.
Authors and Affiliations
Yang CAO, Xiaoke LIANG, Yue ZHANG, Qiang WANG, Chengyong YAO, Tong QU
Keywords
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- EP ID EP735617
- DOI 10.16037/j.1007-869x.2024.05.014
- Views 28
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