A research program is described during which an extensive series of tests was conducted on a new design aluminum triple covered hopper car. These tests included a complete experimental stress analysis of the car under high static loads and impact forces. Because this car was of a design using materials and construction which differed from conventional designs, it was considered advisable to make the tests at loads and forces exceeding those generally applied to freight cars. Test results indicated that some method of relieving the point of stress concentration at the side sill adjacent to the bolster was needed. Additional weldments should be added between the compartment partitions and the roof to provide greater resistance to lading surges during heavy impacts. Provision should be made for jacking pads at the bolster location to distribute the load and avoid possible deformation when car jacking is required.

Media Info

  • Features: Figures; Photos; Tables;
  • Pagination: 35 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00040310
  • Record Type: Publication
  • Report/Paper Numbers: MR-416 Test Rpt
  • Files: TRIS
  • Created Date: Jul 8 1994 12:00AM