Crashworthiness Studies of Locomotive Wide Nose Short Hood Designs

This article reports on a study of the factors that influence the structural response of typical wide nose locomotive short hoods involved in offset collisions. The authors chose this focus based on the railway collision that occurred in Selma, North Carolina, on May 16, 1994. In that collision, a raised overhanging intermodal trailer on a freight car struck the front of the oncoming passenger locomotive. The authors investigated the potential effectiveness of stronger corner structures. They consider degree of overlap, material and thickness combinations, obliquity, and crush response dependence on initial impacting speed. The authors determine an analytical expression to predict the mean crush force for a raised offset collision where the intruding body is far away from any support structures. Results showed that obliquity has little effect on the mean crush force for short penetration distances; increased material thickness improves crashworthiness performance; initial impacting speed does not dramatically alter mean crush loads predicted for large offsets away from supports; and the distances from supporting structures have a significant effect on the predicted mode of failure and hence predicted mean crush loads. The authors conclude that it is possible to dramatically increase the crashworthiness responses of short hood structures with minor increases in weight while staying within the original design volume envelope.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 319-333
  • Serial:
    • Volume: 237

Subject/Index Terms

Filing Info

  • Accession Number: 01003928
  • Record Type: Publication
  • Files: NTL, TRIS
  • Created Date: Sep 8 2005 6:11AM