中国铁道科学2025，Vol.46Issue(3)：11-20,10.DOI:10.3969/j.issn.1001-4632.2025.03.02
轮轨高频激励下转向架构架振动损伤
Research on the Vibration Damage of the Bogie Frame under High Frequency Wheel-Rail Excitation
摘要
Abstract
To investigate the impact of high frequency wheel-rail excitation on vibration-induced damage of bogie frames and improve the accuracy of frequency-domain damage calculations,vibration bench tests of bogie frames under different wheel-rail excitation frequencies and amplitudes were conducted.Critical regions of the bogie frame and the effect from excitation frequencies and amplitudes on the stresses under different excitation conditions were analyzed.In response to the non-Gaussian characteristics of stress signals,the frequency-domain correction method for frame damage calculation was optimized and validated through comparative studies with time-domain methods,conventional frequency-domain methods,and existing frequency-domain correction methods.Based on the optimized frequency-domain correction method,the impact of different excitation conditions on frame damage was systematically investigated.The results reveal that the high-frequency wheel-rail excitation frequencies of 523,578,and 670 Hz,frequently encountered during train operation,closely align with the natural frequencies of the frame,inducing significant stress responses.At these strong-response excitation frequencies,the root mean square(RMS)values of stress in critical regions which called the frame end zone,arm positioning seat area,brake hanger area,and vertical damper seat area,exhibit maximum increases of 6.9,2.6,6.5,and 10.6 times,respectively,compared to non-resonant conditions.Correspondingly,the equivalent damage per 10,000 kilometers amplifies by factors of 987,109,653,and 1,139.At strong-response excitation frequencies,increasing the excitation amplitude from 0.075 mm to 0.200 mm resulted in an average increase of approximately 0.5 times in RMS stress and about 3 times in equivalent damage.The proposed optimized frequency-domain correction method reduces the maximum error in frequency-domain damage calculations to below 10%and ensures a more conservative damage assessment for the frame.These findings offer valuable references and data support for the anti-vibration fatigue design of high-speed train bogie frames.关键词
振动损伤/转向架构架/高频激励/台架试验/频域法/频域修正法Key words
Vibration-induced damage/Bogie frame/High frequency excitation/Bench test/Frequency domain method/Frequency-domain correction method分类
交通工程引用本文复制引用
曾一鸣,王文静,吴庆,郝成宇..轮轨高频激励下转向架构架振动损伤[J].中国铁道科学,2025,46(3):11-20,10.基金项目
铁路基础研究联合基金资助项目(U246820080) （U246820080）
中国国家铁路集团有限公司科技研究开发计划课题(P2024J001) （P2024J001）
