Evaluation of Wheel/Rail Contact Mechanics: Roller Rig Concept Design Review

Ahmadian, Mehdi; Craft, Michael; Virginia Polytechnic Institute and State University. Center for Vehicle Systems and Safety

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Evaluation of Wheel/Rail Contact Mechanics: Roller Rig Concept Design Review

2014-07-01
By Ahmadian, Mehdi ; Craft, Michael

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Details:

Alternative Title:

Evaluation of wheel-rail contact mechanics : concepts report.
Creators:

Ahmadian, Mehdi ; Craft, Michael

Ahmadian, Mehdi ; Craft, Michael Less -
Corporate Creators:

Virginia Polytechnic Institute and State University. Center for Vehicle Systems and Safety
Subject/TRT Terms:

[+]

Contact Patch Dynamics Design High Speed Rail I91: Vehicle Design And Safety Mechanics Railroads Rail Vehicle Dynamics Research Hub Rolling Contact Scale Models Test Trains Tractive Forces Train Track Dynamics Vehicles And Equipment
Publication/ Report Number:

DOT/FRA/ORD-14/28
Resource Type:

Tech Report
Geographical Coverage:

United States
TRIS Online Accession Number:

01535341
Edition:

Final Report 9/15/2010 to 11/30/2011
Corporate Publisher:

United States. Federal Railroad Administration. Office of Research and Development
Abstract:

A need exists for a new test rig design with advanced sensing technologies that will allow the railroad industry and regulatory agencies to better understand the wheel-rail contact dynamics and mechanics, especially as it pertains to high-speed rail. Both scaled and full-scale designs are being investigated. The use of scaled designs will make testing possible at much lower investment and complexity than is required for full-scale testing. However, a scaled rig eliminates the ability to directly test with fielded and standard (off-the-shelf) components. Irrespective of the scaling, the controlled laboratory environment will assist with obtaining data on the mechanics and dynamics of the creepage and creep forces within the contact ellipse under various conditions; this evaluation process is essential for better understanding the fundamentals of wheel-rail contact dynamics and more effective rail dynamics modeling. Therefore, we recommend developing a streamlined test rig of 1/4 to 1/5 full-scale with precise test control and sensory system that allows for accurate measurement of the wheel forces and moments that occur in conditions representative of actual field occurrences. The scaled test rig may serve as a steppingstone for future development of a full-size rig.
Format:

PDF
Collection(s):

Federal Railroad Administration US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:9eabed0a4ae207cb6cea37c8e2e0aede4c887e76f3df5c60ed63348f259c75d8
Download URL:

https://rosap.ntl.bts.gov/view/dot/28261/dot_28261_DS1.pdf
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Evaluation of Wheel/Rail Contact Mechanics: Roller Rig Concept Design Review

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