期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：304
期号：3
页码：1-6
DOI：10.1088/1755-1315/304/3/032017
出版社：IOP Publishing
摘要：Strengthening the detection and monitoring of abnormal track structure is of great significance to ensure the good operation of high-speed trains. The feasibility of detecting abnormal track structure of lower structure based on vehicle body vibration acceleration is verified numerically in this paper. A passenger car model is firstly established by rigid body dynamics software SIMPACK, and the vibration response of the car body is obtained by adding the abnormal irregularity waveform of typical track on the track spectrum as the wheel-rail excitation. And then, by comparing the acceleration vibration response of different positions and directions on the car body, the optimal measuring point of vibration sensor on the car body is determined. The results show that the vertical vibration acceleration of the front and rear position of the car can effectively reflect the abnormality of the lower track structure. Using the vibration data of the car body as the medium can provide a new way for the rapid abnormal detection of the lower track structure.
