Effect of vehicle vibration environment of high-speed train on dynamic performance of axle box bearing

ABSTRACT

In this study, we developed a comprehensive three-dimensional vehicle–track coupled dynamics model considering the traction drive system and axle box bearing. In this model, dynamic interactions between the axle box bearing and other components, such as the wheelset and bogie frame, are considered based on a detailed analysis of the structural properties and working mechanism of the axle box bearing. A few complicated dynamic excitations, such as the time-varying mesh stiffness of gears, time-varying stiffness of bearing, bearing gaps and track irregularities, are considered. Then, the dynamic responses of the vehicle–track system are demonstrated via numerical simulations based on the established dynamics model. The results indicate that the traction drive system and track irregularities can significantly influence the dynamic interactions of the axle box bearing. The necessity of considering the excitation caused by gear meshing and track irregularities when assessing the dynamic performance of the axle box bearing is demonstrated.

KEYWORDS:

• Axle box bearing
• vehicle–track coupled dynamics
• coupling effect
• track irregularities
• high-speed train

Disclosure statement

No potential conflict of interest was reported by the authors.

ORCID

Zhiwei Wang http://orcid.org/0000-0002-9402-4729

Additional information

Funding

This project is supported by the National Natural Science Foundation of China [Grant No. 51475391]; The National Key Research and Development Program of China] [Grant No. 2016YFB1200401].