A law for the temperature-induced stress distribution in continuously welded rail. (July 2015)
- Record Type:
- Journal Article
- Title:
- A law for the temperature-induced stress distribution in continuously welded rail. (July 2015)
- Main Title:
- A law for the temperature-induced stress distribution in continuously welded rail
- Authors:
- He, Hongbin
Ling, Yongchun - Abstract:
- A new model is presented for the calculation of the rail extension, the friction created by sleeper fastenings and the temperature-induced stress for continuously welded rail (CWR) under free conditions and the calculation and analysis of temperature-induced stress when the temperature is changing and the rail is anchored. The mechanism for generating friction and the phenomenon of rail creep (extension) on site are used to establish a law that states that the friction force of the fasteners is distributed from the center of the CWR section towards the two ends in increasing scale; this observation is used to derive a formula for calculation of the distribution of the friction force in CWR fastenings. Formulas for calculating the temperature-induced stress and its distribution are also derived. The presented results show that the distribution of temperature-induced stress is cone-shaped in the absence of rail creep (extension), and with creep it presents a tangent and a cone shape in anchored sections. A comparison with the traditional temperature-induced stress distribution pattern in a rail of a tangent constitutes an argument against the established methods. The results reported in this paper should play an important role in guiding site maintenance activities.
- Is Part Of:
- Proceedings of the Institution of Mechanical Engineers. Volume 229:Number 5(2015:Jul.)
- Journal:
- Proceedings of the Institution of Mechanical Engineers
- Issue:
- Volume 229:Number 5(2015:Jul.)
- Issue Display:
- Volume 229, Issue 5 (2015)
- Year:
- 2015
- Volume:
- 229
- Issue:
- 5
- Issue Sort Value:
- 2015-0229-0005-0000
- Page Start:
- 500
- Page End:
- 506
- Publication Date:
- 2015-07
- Subjects:
- Model -- friction due to fastenings (resistance) -- continuously welded rail -- temperature-induced stress in a rail
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625.1 - Journal URLs:
- http://pif.sagepub.com/ ↗
http://www.uk.sagepub.com/home.nav ↗
http://journals.pepublishing.com/content/119781 ↗ - DOI:
- 10.1177/0954409713516612 ↗
- Languages:
- English
- ISSNs:
- 0954-4097
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - BLDSS-3PM
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- 6453.xml