Comparison of Measured and Simulated Longitudinal Coupler Force on Tank Cars

Martin, Timothy

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Comparison of Measured and Simulated Longitudinal Coupler Force on Tank Cars

2023-04-01
By Martin, Timothy

File Language:

English

Details

Creators:

Martin, Timothy
Corporate Creators:

ENSCO, Inc
Corporate Contributors:

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

DOT/FRA/ORD-23/10
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report
Contracting Officer:

González, III, Francisco
Corporate Publisher:

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

Fractures in the stub sills of tank cars pose a significant problem for the rail industry due to the potential for damage to the tank structure and eventual release of the contents. Previous FRA research revealed that high magnitude coupling forces that occur in yard operations have the potential to exceed the yield limits of mild steel. FRA, Union Tank Car, and Amsted Rail completed a cooperative test program at Amsted Rail’s test facility in Camp Hill, PA, in 2018 to characterize coupling loads for tank cars in yard operations. The statistical analysis revealed that the peak longitudinal coupler force is mostly influenced by coupling speed and draft gear type, not configurations of loaded and empty cars. The TEDS software tool was used to run simulations on a subset of these impact tests. The comparison between the measured and simulated longitudinal coupler force showed relatively good results. However, the simulation could be improved. One or two more iterations of fine tuning the model parameters could potentially improve the comparison in the future.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/67044/dot_67044_DS1.pdf
File Type:

[PDF - 1.78 MB]
Collection(s):

Federal Railroad Administration
Main Document Checksum:

urn:sha-512:02665e98806bf4af9b1134cbf60b64211ce9f9dbdd2cdfb8251bdc84d0e2aeec7284d4602d6566f17baf49000dc6bd9f39f701d83301cf7a669571c6eb6ed26c

File Language:

English

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