FINAL REPORT ON A THREE-DIMENSIONAL PHOTOELASTIC INVESTIGATION OF THE PRINCIPAL STRESSES AND MAXIMUM SHEARS IN THE HEAD OF A MODEL OF A RAILROAD RAIL
This report deals with a photoelastic study of the stresses in a model of the head of a railroad rail, utilizing for this purpose the most recent developments in three-dimensional photoelasticity. The study was undertaken in the expectation that the results would lead to a better understanding of the phenomenon of shelling in rails. It is concluded that: 1. Near the region of contact the principal stresses in the model are all compressive both for the vertical load and for the combined loads used. 2. Below the region of contact the longitudinal stresses become tensile for both types of loading. 3. The maximum shear lies in the transverse section of symmetry for both types of loading. 4. The effect of the horizontal thrust is primarily to increase the shear in the immediate vicinity of the area of contact by 30 percent. 5. On the side of the rail away from the load the stresses are predominantly tensile and are much smaller than on the loaded side for both types of loading.
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Corporate Authors:
American Railway Engineering Association
59 East Van Buren Street
Chicago, IL United States 60605 -
Authors:
- Frocht, M M
- Publication Date: 1954
Media Info
- Features: Appendices; Figures; Photos; References;
- Pagination: p. 854-897
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Serial:
- AREA BULLETIN
- Volume: 55
- Publisher: American Railway Engineering Association
Subject/Index Terms
- TRT Terms: Defects; Deformation curve; Economics; Equipment tests; Photoelasticity; Railroad rails; Shear properties; Shelling (Metals); Simulation; Stresses; Technology; Tension
- Uncontrolled Terms: Contact stress; Tensile stress
- Geographic Terms: United States
- Old TRIS Terms: Photoelastic analysis; Rail stress; Shelling; Shelling (Rails); Test equipment
- Subject Areas: Economics; Railroads;
Filing Info
- Accession Number: 00040827
- Record Type: Publication
- Files: TRIS
- Created Date: Jul 8 1994 12:00AM