PROGRESS REPORT--DEVELOPMENT OF AN ASSOCIATION OF AMERICAN RAILROADS DYNAMIC BOLSTER TEST

Preliminary work was completed on the analysis of the strength of truck bolsters relative to possible service type loadings. Measurements were made of maximum tensile and compressive stresses occurring in a bolster specimen under laboratory conditions simulating predicted service imposed loadings occurring with cyclic frequency. The results of the full study are expected to lead to a laboratory fatigue test for use in an acceptance specification for bolsters. The stress measurements were made for two general types of loading conditions considered to be the principal types of cyclic fatigue loadings imposed on truck bolsters in service. For both type loadings, stress measurements were made at a number of load levels. The basic procedures used in this study are presented in this report. There were some deviations required from these procedures that are explained in the report.

• Corporate Authors:

  Association of American Railroads Research Center

  3140 South Federal Street
  Chicago, IL  United States  60616
• Publication Date: 1970-10

Media Info

• Features: Appendices; Figures; Photos; Tables;
• Pagination: 7 p.

Subject/Index Terms

• TRT Terms: Bolsters; Freight cars; Structural analysis; Trucks; Vehicle design; Vehicle dynamics
• Uncontrolled Terms: Fatigue analysis
• Old TRIS Terms: Freight car dynamics; Truck and bolster systems
• Subject Areas: Design; Motor Carriers; Railroads;

Filing Info

• Accession Number: 00080123
• Record Type: Publication
• Source Agency: Association of American Railroads
• Report/Paper Numbers: R-106
• Files: TRIS
• Created Date: Jan 16 1976 12:00AM