原文传递
Frequency Domain Analysis of Train-Guideway Interaction Dynamics
| 题名： | Frequency Domain Analysis of Train-Guideway Interaction Dynamics |
| 其他题名： | Cheung,Y.K.,F.T.K.Au,D.Y.Zheng,and Y.S.Cheng.1999."Vibration of multi-span non-uniform bridges under moving vehicles and trains by using modified beam vibration functions."J.Sound Vib.228(3):1-18.https://doi.org/10.1006/jsvi.1999.2423. |
| 正文语种： | 英文 |
| 作者： | David Hubbell |
| 关键词： | interaction；harmonic；integration；analysis；optimization；domain；octave；newmark；dynamics；balance |
| 摘要： | A frequency domain approach to dynamic analysis of train-girder interaction is presented. The method is based on the calculation of a harmonic transfer matrix for the system, using the principle of harmonic balance. Results of the analysis are verified by comparison with a numerical integration using Newmark's method. It is demonstrated that the frequency domain approach is able to model stochastic track irregularity without the need for a Monte Carlo approach, as is required when numerical integration is used. The method also leads naturally to a linear least-squares optimization problem giving the best camber shape for reducing train vibrations. Train vibrations are evaluated using a ride comfort index based on weighted third-octave acceleration magnitudes. Through an illustrative example, it is shown that camber can reduce the total frequency-weighted acceleration level by 22％. |
| 出版年： | 2018 |
| 论文唯一标识： | P-26Y2018V144N08009 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/(ASCE)ST.1943-541X.0002081 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 144 |
| 期： | 08 |
| 页码： | 88-98 |
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