摘要
针对铁路车轴压装界面早期微动磨损检测困难的问题,基于Comsol软件固体力学-弹性波多物理场耦合模块,建立含微动磨损的车轴压装界面超声检测分析模型。以透射信号基波及二次谐波的幅值为特征量构建了超声波非线性系数与超声透射系数,讨论了压装界面磨损深度、长度以及压装力对超声波非线性系数与超声透射系数的影响,提出车轴压装界面微动磨损尺寸评估模型。结果表明,非线性系数随着压装界面磨损深度、长度的增大而增大,随压装力的增大而减小;超声透射系数随压装界面磨损深度、长度的增大而减小,随压装力的增大而增大。该结论为车轴压装界面微动磨损的尺寸定量评估提供了理论参考。
Aiming at the difficulty of detecting early fretting wear on railway axle press fitting interface,an ultrasonic detection and analysis model of axle press fitting interface containing fretting wear was established based on the Comsol solid mechanics and elastic wave physical field coupling module.The ultrasonic guided wave nonlinear coefficient and ultrasonic transmission coefficient were constructed with the amplitude of transmitted signal base wave and second harmonic wave as the characteristic values.The effects of the wear depth,length and force on the nonlinear coefficient and transmission coefficient of ultrasonic guided wave were discussed,and the fretting wear dimension evaluation model of axle pressing interface was proposed.The results show that the nonlinear coefficient increases with the increase of wear depth and length,and decreases with the increase of pressing force.The ultrasonic transmission coefficient decreases with the increase of wear depth and length,and increases with the increase of pressing force.This will provide a theoretical reference for the dimensional quantitative evaluation of fretting wear on the axle press mounting interface.
作者
吴伟
沈意平
胡斌梁
王送来
蒋帅
WU Wei;SHEN Yiping;HU Biniang;WANG Songai;JIANG Shuai(Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment,Hunan University of Science and Technology,Xiangtan 411201,China;School of Intelligent Manufacturing,Hunan Railway Professional Technology College,Zhuzhou 412001,China)
出处
《无损检测》
CAS
2024年第8期54-62,共9页
Nondestructive Testing
基金
湖南省重点研发计划(2023GK2026)
湖南省自然科学基金面上项目(2022JJ30260)
湖南省教育厅科学研究项目(22B1010,22C0256)。
关键词
车轴压装界面
微动磨损尺寸
压装力
非线性系数
超声透射系数
axle pressing interface
fretting wear size
pressure loading force
nonlinear coefficient
ultrasonic transmission coefficient
