Longitudinal Resistance Modeling for Frozen Ballast [Research Results]

Baillargeon, Jay; Woody, Stephen (Sean); United States. Department of Transportation. Federal Railroad Administration. Office of Research and Development; Association of American Railroads. Transportation Technology Center, Inc. (TTCI)

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Longitudinal Resistance Modeling for Frozen Ballast [Research Results]

2022-07-01
By Baillargeon, Jay ; Woody, Stephen (Sean)

[PDF-604.29 KB]

English

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Creators:

Baillargeon, Jay ; Woody, Stephen (Sean)

Baillargeon, Jay ; Woody, Stephen (Sean) Less -
Corporate Creators:

United States. Department of Transportation. Federal Railroad Administration. Office of Research and Development ; Association of American Railroads. Transportation Technology Center, Inc. (TTCI)

United States. Department of Transportation. Federal Railroad Administration. Office of Research and Development ; Association of American Railroads. Transportation Technology Center, Inc. (TTCI) Less -
Subject/TRT Terms:

[+]

Ballast (Railroads) Continuous Welded Rail Freezing Longitudinal Reinforcement Railroad Tracks Resistance (Mechanics)
Publication/ Report Number:

RR 22-22
Resource Type:

Brief
Geographical Coverage:

United States
Edition:

Research Results
Contracting Officer:

Baillargeon, Jay
Corporate Publisher:

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

On behalf of the Federal Railroad Administration (FRA), Transportation Technology Center, Inc. (TTCI) developed a “proof-of-concept” finite element (FE) longitudinal resistance model to simulate a rail break based on historical data. Longitudinal track resistance (fo) is an important parameter for rail break repairs to re-establish the rail neutral temperature (RNT) [1]. If an incorrect fo is used, the resulting RNT could be too high, which increases the risk of additional rail breaks. Conversely, if it is too low, this increases the risk of the track buckling. This project was undertaken to better define fo on frozen ballast due to the lack of sufficient data for this condition. Researchers developed an FE model to support much-needed field testing in the future. Research was conducted between Fall 2021 and Spring 2022.
Format:

PDF
Collection(s):

Federal Railroad Administration
Main Document Checksum:

[+]

urn:sha256:6c089cbceacc8986e9a04674e2104aa34f1a7769faa2c57f63ca10d549b1581e
Download URL:

https://rosap.ntl.bts.gov/view/dot/64361/dot_64361_DS1.pdf
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Longitudinal Resistance Modeling for Frozen Ballast [Research Results]

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