Investigation of the effects of sliding on wheel tread damage

Talamini, Brandon; Gordon, Jeff; Perlman, A. Benjamin

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Investigation of the effects of sliding on wheel tread damage

2005-11-05
By Talamini, Brandon ; Gordon, Jeff ; Perlman, A. Benjamin

File Language:

English

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Creators:

Talamini, Brandon ; Gordon, Jeff ; Perlman, A. Benjamin
Corporate Contributors:

John A. Volpe National Transportation Systems Center (U.S.) ; Tufts University ; United States. Department of Transportation. Federal Railroad Administration
Subject/TRT Terms:
Publication/ Report Number:

IMECE2005-82826
Resource Type:

Proceedings
Geographical Coverage:

United States
Corporate Publisher:

American Society of Mechanical Engineers
Abstract:

Wheel tread spalling is the main source of damage to wheel treads and ; a primary cause for wheel removals from service. Severe frictional ; heating of the wheel-rail contact patch during sliding causes the ; formation of martensite, a hard, brittle microstructure. The martensite ; patches break away from the more resilient bulk of the wheel tread ; when subjected to contact loads, resulting in spall formation. ; Prolonged sliding allows a greater volume of wheel tread material to ; reach extremely high temperatures, which will lead to material ; ablation and the formation of a slid flat. Such flats are the cause of ; wheel impact loads, which are extremely damaging to truck ; components and rail. This paper outlines an approach developed to ; estimate the effects of sliding on wheel flat formation and the potential ; severity of spalling. The methodology is described and preliminary ; results are presented using an intentionally simplified idealization of ; the wheel-rail contact geometry. Material characterization ; (temperature-dependent properties and failure criteria) and ; management of model size are of equal importance to geometric ; fidelity and are the focus in the early stages of the development of the ; qualitative model present here.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/8991/dot_8991_DS1.pdf
File Type:

[PDF - 265.36 KB]
Collection(s):

Volpe Center ; Federal Railroad Administration
Main Document Checksum:

urn:sha-512:52250bde01ac852d04943f21ad37d91b431f2266924b8a39d9aa5535997fb63f4e494ad36f70bdcb3f2f4e98a2cd7ae7bfb46a435a6741114e3671f1cca64bd4

File Language:

English

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