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首页> 外文期刊>Reliability Engineering & System Safety >Fatigue life reliability evaluation in a high-speed train bogie frame using accelerated life and numerical test
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Fatigue life reliability evaluation in a high-speed train bogie frame using accelerated life and numerical test

机译：利用加速寿命和数值试验评估高速列车转向架框架的疲劳寿命可靠性

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摘要

Durability fatigue tests for full-scale structures are essential to ensure the fatigue reliability and operational safety of high-speed trains. An accelerated life test (ALT) method is first used to predict the fatigue life of a full-scale bogie frame. Three step-up acceleration load spectrum is compiled for an ALT on the basis of the failure mechanism consistency principle. The ALT of a full-scale bogie frame is conducted. Then, the acceleration coefficient and cycle times from the accelerated load level to the working load level are calculated. Based on the equal damage principle, combined with the finite element calculation, the fatigue life of the bogie frame under acceleration load spectrum is extrapolated. The ALT method is used to compile the acceleration load spectrum and to perform fatigue tests to analyze the acceleration coefficients and predict the fatigue life for a full-scale bogie frame, which provides a reference for the reliability evaluation of large structures.
机译：全面结构的耐久性疲劳测试对于确保高速列车的疲劳可靠性和操作安全至关重要。首先使用加速寿命测试（ALT）方法来预测全尺寸转向架框架的疲劳寿命。基于失效机制一致性原理，为ALT编制了三级加速负荷谱。进行全尺寸转向架框架的ALT。然后，计算从加速负载水平到工作负载水平的加速系数和循环时间。根据相等损伤原理，结合有限元计算，推导了转向架框架在加速载荷谱下的疲劳寿命。 ALT方法用于编制加速载荷谱，并进行疲劳测试，以分析全尺寸转向架框架的加速度系数和预测疲劳寿命，为大型结构的可靠性评估提供参考。

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