A FINITE ELEMENT ANALYSIS OF RESIDUAL STRESS IN SWITCH BLADES PRODUCED BY TRANSVERSE BENDING

It is believed that the fatigue crack growth in railway rails is greatly influenced by the residual stress states. The main sources of residual stresses in rails are: the manufacturing process, the rolling wheels of railroad cars and the transverse bending used in cold forming of switch blades. The paper presents a simulation of the process of transverse bending leading to non uniform plastic strains, and as a final effect, residual stresses. The numerical approach is applied using the general-purpose finite element analysis program ABAQUS. The segments of rails are modelled using three-dimensional solid elements. The non-linear relations with respect to both material and geometry are taken into account in the analysis. In order to simulate the mechanical states of specimens during bending and releasing, the loading is divided into two steps, each one consisting of four increments. The distributions of stresses and strains on the surface and in the cross-sections of the specimen are investigated for each load increment. The results of calculations show the process of forming residual stress states, their magnitude and 3D distribution. The data describe how the residual stress distribution is affected by the magnitude of the total displacement caused by transverse bending. For the covering abstract see ITRD E123713.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0947644458
• Corporate Authors:

  ENGINEERING TECHNICS PRESS

  46 CLUNY GARDENS
  EDINBURGH,   United Kingdom  EH10 6BN
• Authors:
  • KWAOENIEWSKI, L
  • TOWPIK, K
  • KOWALCZYK, P
• Publication Date: 2001

Language

• English

Media Info

• Features: References;
• Pagination: 9 p.
• Serial:
  • PROCEEDINGS OF THE INTERNATIONAL CONFERENCE RAILWAY ENGINEERING 2001, HELD LONDON, UK, 30 APRIL - 1 MAY 2001 - CDROM
  • Publisher: ENGINEERING TECHNICS PRESS

Subject/Index Terms

• TRT Terms: Conferences; Cracking; Fatigue (Mechanics); Finite element method; Loads; Mathematical models; Railroad tracks; Simulation; Stresses
• ITRD Terms: 8525: Conference; 5211: Cracking; 5579: Fatigue (mater); 6490: Finite element method; 5567: Load; 1062: Railway track; 9103: Simulation; 5575: Stress (in material); 9080: Three dimensional
• Subject Areas: Data and Information Technology; Railroads;

Filing Info

• Accession Number: 00985520
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-947644-45-8
• Files: ITRD
• Created Date: Feb 4 2005 12:00AM