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United States Department of Transportation United States Department of Transportation

Raking Impact Testing of Diesel Multiple Unit (DMU) Fuel Tanks

Document Series
Technical Reports
Author
Federal Railroad Administration
Report Number
DOT/FRA/ORD-21/27
Office
RPD-32
Subject Rolling Stock
Keywords
Diesel multiple unit fuel tanks, impact test, crashworthiness, finite element analysis, puncture resistance, DMU, passenger locomotive, fuel tanks, raking, rolling stock

On December 18, 2018, a quasi-static raking test of a diesel multiple unit (DMU) fuel tank was conducted at the Transportation Technology Center (TTC) in Pueblo, CO. This test resulted in puncture of the tank's end sheet and a 22.6-inch tear in its bottom sheet. On November 13, 2019, a second quasi-static raking test of a DMU fuel tank was conducted, which scraped the tank's bottom sheet for 44.6 inches and produced two distinct puncture locations. A finite element (FE) model was developed of the fuel tank and indenter to prepare for the raking tests. Overall, both the pre- and post-test FE models exhibited limited agreement with the test measurements up to the point of material failure, when the fuel tank begins to tear.


Last updated: Friday, October 8, 2021