RAIL FORCE STRESSES DUE TO Y AND Q FORCES COMPUTATION METHODS

Two methods are described to determine the maximum acceptable principal stresses in a rail outside the Hertzian contact area, these methods being simpler than the finite element method. In most cases the theory of a continuously supported bending beam with infinite length is used for this type of loading. The problem is that torsion can be transmitted in two different ways as lateral forces in the head and foot of the rail, and as free-buckling torsion. This phenomenon is studied with two models: in the first, rail support is assumed to have continuous elasticity, the second, is based on a support with discrete elasticity. In addition, the problem of the boundary conditions is analysed.

• Supplemental Notes:
  • Restrictions on the use of this document are contained in the explanatory material.
• Corporate Authors:

  International Union of Railways

  Office of Research and Experiments
  Utrecht,   Netherlands 
• Authors:
  • Dubbeldam, J W
• Publication Date: 1980-1

Media Info

• Features: Figures; Tables;
• Pagination: 26 p.

Subject/Index Terms

• TRT Terms: L/V ratio; Loads; Mathematical models; Railroad rails; Rolling contact; Stresses; Torsion; Train track dynamics; Wheels
• Uncontrolled Terms: Lateral loads; Vertical loads
• Old TRIS Terms: Question dt104 (C138); Rail stress
• Subject Areas: Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00053385
• Record Type: Publication
• Report/Paper Numbers: DT 104 (C 138)E
• Files: TRIS
• Created Date: Feb 6 1981 12:00AM