Irregularity model of welded rail joint and wheel-rail dynamic responses in heavy-haul railway Online publication date: Fri, 30-Aug-2019
by Kaiyun Wang; Zhiyong Shi; Shen Wang
International Journal of Heavy Vehicle Systems (IJHVS), Vol. 26, No. 5, 2019
Abstract: Due to the irregularity of excitation of welded rail joints (WRJs), the dynamic impacting force between the wheel and the rail would be obviously enhanced. According to measured irregularities of WRJs in heavy-haul railway, a modified excitation model is put forward to simulate the irregularity in this paper. Dynamic interactions excited by the irregularities are analysed, including the measured irregularity, the theoretical irregularities obtained from a traditional model and a modified model. Effects of parameters of the modified excitation model on dynamic interaction are discussed. Results show that, compared to the traditional model, the dynamic performances excited by the modified model present better consistency with those due to the excitation of the measured irregularity. Furthermore, with the growth of the depth, the wheel-rail dynamic indices will increase linearly, and they will decrease nonlinearly with the increase of the wavelength.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Heavy Vehicle Systems (IJHVS):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook