Side Impact Test and Analyses of a DOT-113 Surrogate Tank Car with Cryogenic Lading
The Federal Railroad Administration (FRA) conducted a side impact test of a surrogate DOT-113 tank car at the Transportation Technology Center, Inc. (TTCI) to evaluate the performance of the tank car under dynamic impact conditions and to provide data for the verification and refinement of a computational model. The tank car surrogate was filled with liquid nitrogen at -320 °F to achieve a 5 percent outage. The targeted pressure range for this test was 15 to 35 psig. During the test, the pressure in the tank car was 30 psig. The tank car was impacted by a 297,200-pound ram car traveling at 18.3 mph fitted with a 12-inch by 12-inch impactor. The ram car impacted the tank car 32 inches off-center toward the A-End. The tank car was not punctured. The Volpe National Transportation Systems Center (Volpe) performed pre-test finite element (FE) modeling to estimate the overall response of the tank to the impact. The goal of the DOT-113 side impact test series is to analyze the side impact performance of a DOT-113 tank car carrying liquefied natural gas (LNG) under typical service conditions. Once confidence in the FE model is achieved, this model will be used to estimate the puncture resistance of a DOT-113 tank car carrying LNG.