WIT Press

Microstructure And Residual Stress Analysis Of A 'rim Chilled' Solid Wheel For Rail Transportation System

Price

Free (open access)

Paper DOI

10.2495/SURF950341

Volume

8

Pages

8

Published

1995

Size

743 kb

Author(s)

G. Donzella, S. Granzotto, G. Amici, A. Ghidini & R. Bertelli

Abstract

The "Rim Chilling" treatment on a railway wheel has been simulated by means of heat transfer and thermal stress fern analyses. Both the microstructure and the residual stress distribution after the chilling have been numerically predicted and verified by means of micrographic observations and strain gauge measurements. A good agreement was found between numerical and experimental results. Introduction Some types of railway cars are equipped with braking devices based on shoes acting directly on the tread surfaces of the wheel. Given the considerable thermal stress, the action of the brake shoes aggravates the wear of the wheel, favouring fatigue defects. A di

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