WEAR OF BRAKE BLOCKS FOR IN-SERVICE CONDITIONS
Poster (konferens), 2012

Wear of brake blocks at tread braking of railway wheels is one of the key factors that control the time period between scheduled train maintenance and hence has a substantial impact on the life cycle cost of the vehicle. Wear simulations using two different numerical models, one thermal model and one thermoelastic model, are presented implementing wear rates for some brake block materials exploiting results from previously performed temperature-controlled pin-on-disc tests. It is found that the thermal model and the thermoelastic model give the same wear for cases when thermoelastic instability effects are small. However, for cases when the thermoelastic effects increase the local contact pressures and surface temperatures, large differences are found.

wear

railway

tread braking

numerical simulations

Författare

Tore V Vernersson

Chalmers, Tillämpad mekanik, Dynamik

Roger Lundén

Chalmers, Tillämpad mekanik, Dynamik

9th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems

706-713

Styrkeområden

Transport

Ämneskategorier

Farkostteknik