Wear of brake blocks for in-service conditions-Influence of the level of modelling
Artikel i vetenskaplig tidskrift, 2014
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.
MATERIALS SCIENCE
MULTIDISCIPLINARY
Multidisciplinary
Railway
TEMPERATURES
SPEED
Tread brakes
PART 2
Brake materials
MECHANICAL
Engineering
Mechanical
High temperature
Materials Science
Sliding wear
RAILWAY TREAD BRAKING
ENGINEERING
Författare
Tore V Vernersson
Dynamik
Roger Lundén
Dynamik
Wear
0043-1648 (ISSN)
Vol. 314 1-2 125-131Ämneskategorier
Maskinteknik
Styrkeområden
Transport
DOI
10.1016/j.wear.2013.12.008