Evaluation of railroad cab car end beam designs.

Mayville, Ronald A.; Hammond, Ralph P.; Johnson, Kent N.; Arthur D. Little, Inc.

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Evaluation of railroad cab car end beam designs.

2003-06-01
By Mayville, Ronald A. ; Hammond, Ralph P. ; Johnson, Kent N.

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English

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Creators:

Mayville, Ronald A. ; Hammond, Ralph P. ; Johnson, Kent N.

Mayville, Ronald A. ; Hammond, Ralph P. ; Johnson, Kent N. Less -
Corporate Creators:

Arthur D. Little, Inc.
Corporate Contributors:

John A. Volpe National Transportation Systems Center (U.S.) ; United States. Federal Railroad Administration. Office of Research and Development

John A. Volpe National Transportation Systems Center (U.S.) ; United States. Federal Railroad Administration. Office of Research and Development Less -
Subject/TRT Terms:

[+]

Beams Cabs (Vehicle Compartments) Design Energy Absorption Finite Element Method High Strength Railroad Cars
Publication/ Report Number:

DOT-VNTSC-FRA-03-05 ; DOT/FRA/ORD-02/08

DOT-VNTSC-FRA-03-05 ; DOT/FRA/ORD-02/08 Less -
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

United States. Federal Railroad Administration. Office of Railroad Policy and Development
NTL Classification:

NTL-RAIL TRANSPORTATION-RAIL TRANSPORTATION;NTL-RAIL TRANSPORTATION-Rail Safety;NTL-SAFETY AND SECURITY-SAFETY AND SECURITY;NTL-SAFETY AND SECURITY-Rail Safety;NTL-SAFETY AND SECURITY-Vehicle Design;
Abstract:

This report presents the results of an experimental study to establish the strength and energy absorption capability of railroad cab car corner structures built to current requirements and for structures modified to carry higher loads and absorb more energy. Current cab car structures were reviewed and an end beam test element was designed with a corner post support baseline strength of at least 150,000 lbf. This design was modified to provide a strength of over 400,000 lbf. Three tests were conducted, one static and two dynamic. All experiments were accompanied by nonlinear, dynamic finite element analysis. It was observed that the strength of the baseline element was 30% greater than the design value and that approximately 100kj of energy was absorbed before fracture. Static and dynamic analyses and test results agreed quite closely. The drop tower test conducted with an end beam test article that had been reinforced with a column had a peak load greater than 400,000 lbf. The energy absorption capability of the modified system was over four times that of the baseline configuration. These results demonstrate that significant improvement can be made to cab car corner structures with relatively minor modifications to current design.
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:cb19e3995621734c67e3213b46b1e4c24fb8428501946d131ff80b355426335e
Download URL:

https://rosap.ntl.bts.gov/view/dot/23161/dot_23161_DS1.pdf
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Evaluation of railroad cab car end beam designs.

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