The Educational Railroading Conference Leader Since 1994

26th ANNUAL WHEEL RAIL INTERACTION CONFERENCE

2021 Principles Course Session

Abstract:

Wheel-Rail Contact Mechanics

Kevin Oldknow

Kevin Oldknow
Simon Fraser University

Coverage includes the wheel-rail interface anatomy and key terminology. Fundamentals of wheel-rail contact mechanics are reviewed, including wheel-rail contact geometry, the “normal” problem, and the “rolling” problem. The contact patch and contact pressures are discussed, along with creepage at the wheel-rail interface and its relationship with friction forces that dictate vehicle steering and stability in both tangent and curved track.