Investigation of Wheel and Rail Rolling Contact Fatigue Using a Full-Scale Simulator

Tournay, Harry; Shu, Xinggao; Keylin, Alexander; Cakdi, Sabri

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Investigation of Wheel and Rail Rolling Contact Fatigue Using a Full-Scale Simulator

2022-03-01
By Tournay, Harry ; Shu, Xinggao ; Keylin, Alexander

File Language:

English

Details

Creators:

Tournay, Harry ; Shu, Xinggao ; Keylin, Alexander ; Cakdi, Sabri
Corporate Creators:

Transportation Technology Center, Inc.
Corporate Contributors:

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

DOT/FRA/ORD-22/13
Resource Type:

Tech Report
Geographical Coverage:

United States
Contracting Officer:

Tajaddini, Ali
Corporate Publisher:

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

With support from FRA, Transportation Technology Center Inc. (TTCI) developed a full-scale rolling contact fatigue simulator (RCFS) to research the root causes of wheel and rail surface damage. This damage comprises surface pitting, cracking, wear, and material flow and is a function of both the vertical wheel load (and normal contact stresses) and the steering tractions transmitted across the contact patch. The RCFS can simulate nominal axle loads of up to 49.5 tons. The position and orientation of the wheelset to the track (i.e., angle-of-attack and lateral displacement from the track centerline) can be adjusted to control the steering forces on both high and low rails. High steering tractions on the low rail have been found to develop high-impact wheel and rail damage. TTCI’s task was to determine the limits to these tractions and, in turn, set performance limits for bogies in heavy haul operation in North America. This report describes how the RCFS operates as well as the supporting analysis and initial tests to develop wheel and rail damage on the low rail as part of this effort.
Format:

PDF
Funding:

DTFR53-11-D-00008, Task Order 349
Download URL:

https://rosap.ntl.bts.gov/view/dot/61034/dot_61034_DS1.pdf
File Type:

[PDF - 1.55 MB]
Collection(s):

Federal Railroad Administration
Main Document Checksum:

urn:sha256:c2236f3840e18820f75732ba00665370f5413fd565f124e2e728ce05a000b7e6

File Language:

English

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