RESIDUAL LONGITUDINAL STRESSES IN THE RAIL
The residual stresses result: from heat effects during the cooling of the rail after it leaves the rolling mill; from trimming, after rolling in the vertical and horizontal directions; and from the plastic deformation of the top surface of the rail by the passage of loads. Several existing methods are compared for determining the residual longitudinal stresses. A test was made by the SNCF on four rails which were removed after 11 years of service (tonnage 11 million tons). Before laying and after removal, the vertical deflections were measured. It is apparent that the longitudinal compressive residual stresses produced by cold rolling at the level of the contact surface give rise to a curvature.
- Restrictions on the use of this document are contained in the explanatory material.
International Union of RailwaysOffice of Research and Experiments
- Publication Date: 1967-7
- Pagination: p. 19-20
- TRT Terms: Deformation; Field tests; Loads; Rail (Railroads); Stresses; Technology
- Uncontrolled Terms: Contact stress; Vertical loads
- Geographic Terms: France
- Old TRIS Terms: Rail deformation; Rail stress
- Subject Areas: Railroads;
- Accession Number: 00039538
- Record Type: Publication
- Report/Paper Numbers: ORE Pub-25
- Files: TRIS
- Created Date: Jan 5 1973 12:00AM