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Finite Element Modelling of Wheel and Rail in Rolling Contact

Damme S., Zastrau B. W.

Machine Dynamics Problems

2004

Vol. 28, No. 1

57-65

The evaluation of the contact patch as well as the distribution of stress and strain in rolling contact requires a geometrically and materially nonlinear approach. The paper gives an overview over the theoretical background of the arbitrary Lagrangian-Eulerian formulation of the dynamics of rolling bodies. Contact formulations for dynamic contact conditions are developed using a velocity oriented approach. The transcription into the Finite Element Method, temporarily limited to an elastic material law, is given. Numerical examples for three dimensional simulations demonstrate the applicability of the developed program package.

General Aspects of Rolling Contact Mechanics for Tire-Road/Terrain and Wheel-Rail Application

Zastrau B. W., Damme S.

Machine Dynamics Problems

2001

Vol. 25, No. 3/4

153-167

The development of contact theories and numerical formula for various applications is a field, which expands rapidly. This publication focuses on the rolling contact problem both for tire-road and wheel-rail contact. For the tire-road application a central problem is the modelling of the composite structure of the tire under internal pressure and axle load and the rolling on soft soil. In the wheel-rail case the contact area is much smaller and therefore much more emphasis is aid on the treatment of material changes, wear and creep phenomena. Several approaches are discussed in detail; ideas about damage mechanisms finish the article.