Measurement of Wheel Load Environment of AAR M-976 Approved Truck

Cakdi, Sabri; Tournay, Harry; Rajkumar, Britto; Cummings, Scott

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Measurement of Wheel Load Environment of AAR M-976 Approved Truck

2017-09-01
By Cakdi, Sabri ; Tournay, Harry ; Rajkumar, Britto

File Language:

English

Details

Creators:

Cakdi, Sabri ; Tournay, Harry ; Rajkumar, Britto ; Cummings, Scott
Corporate Creators:

Transportation Technology Center, Inc.
Contributors:

Punwani, John
Corporate Contributors:

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

DOT/FRA/ORD-17/22
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

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

Measurement of Wheel Load Environment of AAR M-976 Approved Truck study (FRA Task Order 319) is the continuation of the Measurement of Wheel Load Environment of a 3-piece Truck study (Task Order 245) completed in November 2010 that increased understanding of the conditions under which wheel rolling contact fatigue (RCF) damage accumulates. In this study the AAR M-976 approved truck had better steering truck performance, in terms of developing less RCF, than the 3-piece truck used in the previous study. Wheel load environment data was collected from a car operating in revenue service and analyzed using shakedown theory to assess the predicted wheel RCF damage. No track inspection was conducted and the study did not include parameters such as track conditions, rail age, and wheel-rail interface friction management applications. Statistical results from the study showed that a 3-piece truck had approximately four times higher probability of developing RCF than an AAR M-976 truck at 5-degree or tighter curves. For both trucks, RCF was predicted at sharp curves and underbalance speed (cant deficiency),such as yard entrance and exit curves, as well as mine and power plant turnaround loops.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/37427/dot_37427_DS1.pdf
File Type:

[PDF - 1.06 MB]
Collection(s):

Federal Railroad Administration
Main Document Checksum:

urn:sha256:d4feae9a909f176339de6a91cc075bcb1bbf56ee639fbc3654b3fa8918237620

File Language:

English

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