Dynamic models of friction wedge dampers

John F. Gardner, Joseph Paul Cusumano

Research output: Chapter in Book/Report/Conference proceedingConference contribution

30 Scopus citations


Friction wedges play a central role in the vertical dynamics of railroad freight cars. They also play a role in lateral dynamics and stability. While friction wedges are mechanically very simple, their inherent nonlinearities lead to complications in modeling and dynamics. In this paper we present two simplified models of the fundamental physics of friction wedge dampers in the geometry typical of a three-piece truck. We also review the friction wedge model used in NUCARS and compare the three.

Original languageEnglish (US)
Title of host publicationProceedings of the IEEE/ASME Joint Railroad Conference
EditorsJ. Hong, D. Stone
Number of pages5
StatePublished - 1997
EventProceedings of the 1997 IEEE/ASME Joint Railroad Conference - Boston, MA, USA
Duration: Mar 18 1997Mar 20 1997


OtherProceedings of the 1997 IEEE/ASME Joint Railroad Conference
CityBoston, MA, USA

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Ocean Engineering


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