2021 Principles Course Session
Abstract:
Wheel-Rail Contact Mechanics

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.