在多边形轮轨激励下测量高速列车轮轴箱轴承内的动载荷分布

IF 4.4 1区 工程技术 Q2 TRANSPORTATION SCIENCE & TECHNOLOGY
Yu Hou, Xi Wang, Jiaqi Wei, Menghua Zhao, Wei Zhao, Huailong Shi, Chengyu Sha
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引用次数: 0

摘要

高速列车在役轮对轴承的动载荷分布对于轮对轴承的疲劳可靠性评估和前瞻性设计至关重要。本文介绍了在多边形轮轨激励下,对高速列车转向架轮对上四排两个轮对轴承的动载荷分布进行的现场测量。测量采用了一种改进的基于应变的方法来测量滚子轴承的动态径向载荷分布。轮对上的四排两个轴箱轴承表现出不同的载荷区范围和不同的载荷分布平均值。此外,测得的滚子与轮轨接触载荷的平均值和标准偏差随轮轨激振频率的变化呈非单调变化。通过汇编测得的最多载荷位置的滚子-轮轨接触载荷谱,并将载荷谱作为输入,定量预测了多边形轮轨激励下四列轴承的疲劳寿命。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Measured dynamic load distribution within the in situ axlebox bearing of high-speed trains under polygonal wheel–rail excitation

Measured dynamic load distribution within the in situ axlebox bearing of high-speed trains under polygonal wheel–rail excitation

The dynamic load distribution within in-service axlebox bearings of high-speed trains is crucial for the fatigue reliability assessment and forward design of axlebox bearings. This paper presents an in situ measurement of the dynamic load distribution in the four rows of two axlebox bearings on a bogie wheelset of a high-speed train under polygonal wheel–rail excitation. The measurement employed an improved strain-based method to measure the dynamic radial load distribution of roller bearings. The four rows of two axlebox bearings on a wheelset exhibited different ranges of loaded zones and different means of distributed loads. Besides, the mean value and standard deviation of measured roller–raceway contact loads showed non-monotonic variations with the frequency of wheel–rail excitation. The fatigue life of the four bearing rows under polygonal wheel–rail excitation was quantitatively predicted by compiling the measured roller–raceway contact load spectra of the most loaded position and considering the load spectra as input.

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来源期刊
Railway Engineering Science
Railway Engineering Science TRANSPORTATION SCIENCE & TECHNOLOGY-
CiteScore
10.80
自引率
7.90%
发文量
1061
审稿时长
15 weeks
期刊介绍: Railway Engineering Science is an international, peer-reviewed, and free open-access journal that publishes original research articles and comprehensive reviews related to fundamental engineering science and emerging technologies in rail transit systems, focusing on the cutting-edge research in high-speed railway, heavy-haul railway, urban rail transit, maglev system, hyperloop transportation, etc. The main goal of the journal is to maintain high quality of publications, serving as a medium for railway academia and industry to exchange new ideas and share the latest achievements in scientific research, technical innovation and industrial development in railway science and engineering. The topics include but are not limited to Design theory and construction technology System dynamics and safetyElectrification, signaling and communicationOperation and maintenanceSystem health monitoring and reliability Environmental impact and sustainabilityCutting-edge technologiesThe publication costs for Railway Engineering Science are fully covered by Southwest Jiaotong University so authors do not need to pay any article-processing charges.
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