DOI码：10.1080/00423114.2020.1741653
所属单位：地球科学与环境工程学院
教研室：测绘遥感信息系
发表刊物：Vehicle System Dynamics
刊物所在地：英国
关键字：Track irregularities; vehicle response; car body acceleration; multivariate empirical mode decomposition; time-dependent intrinsic correlation
摘要：Track irregularities are perhaps the main excitations of vehicle–track systems and cause dynamic wheel–rail responses, but track irregularities and vehicle responses do not always correspond to each other. In this study, the interrelations between track irregularities and vehicle responses in a multi-scale framework were investigated using measured data. Firstly, the track irregularity and vehicle response data were separated into modes on different time scales using multivariate empirical mode decomposition, and the energy distribution of each wavelength component was determined. Then, the local correlations between irregularity–response mode pairs were examined via time-dependent intrinsic correlation (TDIC) analysis. The irregularity–response interrelation was not always unique, but rather varied in both time scale and time domain, and positive–negative correlation reversals frequently occurred, causing a low overall correlation and coherence. TDIC analysis can elucidate the wavelengths and positions of track irregularities that affect vehicle responses.
论文类型：SCI
论文编号：1741653
学科门类：工学
文献类型：J
卷号：59
期号：9
页面范围：1171-1189
ISSN号：https://www.tandfonline.com/loi/nvsd20
是否译文：否
发表时间：2021-08-01
收录刊物：SCI
发布期刊链接：https://doi.org/10.1080/00423114.2020.1741653