Framework for Wheel Life Model – Phase I

Jang, Bora; Singh, Som P.

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Framework for Wheel Life Model – Phase I

2022-06-01
By Jang, Bora ; Singh, Som P.

File Language:

English

Details

Creators:

Jang, Bora ; Singh, Som P.
Corporate Creators:

Sharma & Associates, Inc.
Corporate Contributors:

United States. Department of Transportation. Federal Railroad Administration. Office of Railroad Policy and Development ; United States. Department of Transportation. Federal Railroad Administration. Office of Research, Development and Technology
Subject/TRT Terms:
Publication/ Report Number:

DOT/FRA/ORD-22/25
Resource Type:

Tech Report
Geographical Coverage:

United States
Contracting Officer:

Omar, Tarek
Corporate Publisher:

United States. Department of Transportation. Federal Railroad Administration
Abstract:

Researchers developed a model to predict the life of a freight railroad car wheel due to rolling contact fatigue, crack initiation and growth leading to fracture. The Phase I effort includes a literature survey, an estimation of hoop residual stress from manufacturing process, and the effects of mechanical load – including traction and thermal load due to tread-braking on the initial residual stresses distribution in the wheel. An analysis shows how a severe braking event may completely eliminate the beneficial hoop residual stress in the rim of a wheel, which can otherwise delay crack initiation and growth. An approach to include the residual stress in the shakedown theory used to predict rolling contact fatigue is proposed to investigate crack initiation and growth.
Format:

PDF
Funding:

693JJ618C000008, FR8RPD32000000008
Download URL:

https://rosap.ntl.bts.gov/view/dot/62602/dot_62602_DS1.pdf
File Type:

[PDF - 9.59 MB]
Collection(s):

Federal Railroad Administration
Main Document Checksum:

urn:sha-512:5a32838a1edeb080b56ffd96f7a323c61ca0d137161b9ae2042c6bc4319014c6fe601bdeae54a036373321480182a51c2ac605f35f58c35be6650f949a1866fe

File Language:

English

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