Dynamic roof crush intrusion in inverted drop testing

Batzer, Stephen A.; Hooker, Robert M.

Affiliations

¹Renfroe Engineering, Inc., United States of America

²Eliseco Systems, United States of America

Abstract

Inverted drop testing of vehicles is a destructive determination of roof strength used by industry, government organizations and independent engineers to determine vehicle safety with respect to rollover collision. In this paper, the results of numerous inverted drop tests are summarized and analyzed, giving both the amount of permanent and temporary roof crush that occurs during impact. Only unmodified production vehicles with sound roofs were tested. The amount of dynamic roof crush varied from a low of 0 to a maximum of 7.0 cm, the relationship between elastic and plastic roof crush was not found to be statistically significant, and prediction intervals for A and B-pillar crush were developed.

Links

URL: http://www-nrd.nhtsa.dot.gov/pdf/esv/esv19/05-0146-W.pdf

Cited By (3)

Year	Entry
2013	Mattos GA, Grzebieta RH, Bambach MR, McIntosh AS. Passenger vehicle structural response in a dynamic rollover test. In: Proceedings of the 23rd International Technical Conference on the Enhanced Safety of Vehicles (ESV). May 27-30, 2013; Seoul, South Korea.
2013	Bambach MR, Grzebieta RH, McIntosh AS, Mattos GA. Cervical and thoracic spine injury from interactions with vehicle roofs in pure rollover crashes. Accid Anal Prev. January 2013;50:34-43.
2013	Lockerby JW. Roof Deformation in Vehicle Rollover: The Case for Including an Energy Criterion in Vehicle Crashworthiness Evaluation [Master's thesis]. Charlottesville, VA: University of Virginia; December 2013.