United States Department of Transportation
i
Analysis of full-scale tank car shell impact tests
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2007-09-11
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[PDF-499.49 KB]
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Alternative Title:Proceedings of the 2007 ASME Rail Transportation Division Fall Technical Conference
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NTL Classification:NTL-RAIL TRANSPORTATION-Rail Safety;NTL-SAFETY AND SECURITY-Rail Safety;NTL-SAFETY AND SECURITY-Vehicle Design;
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Abstract:This paper describes analyses of a railroad tank car
impacted at its side by a ram car with a rigid punch. This
generalized collision, referred to as a shell impact, is examined
using nonlinear finite element analysis (FEA) and threedimensional
(3-D) collision dynamics modeling. Moreover, the
analysis results are compared to full-scale test data to validate
the models. Commercial software packages are used to carry
out the nonlinear FEA (ABAQUS and LS-DYNA) and the 3-D
collision dynamics analysis (ADAMS). Model results from the
two finite element codes are compared to verify the analysis
methodology. Results from static, nonlinear FEA are compared
to closed-form solutions based on rigid-plastic collapse for
additional verification of the analysis. Results from dynamic,
nonlinear FEA are compared to data obtained from full-scale
tests to validate the analysis. The collision dynamics model is
calibrated using test data. While the nonlinear FEA requires
high computational times, the collision dynamics model
calculates gross behavior of the colliding cars in times that are
several orders of magnitude less than the FEA models.
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