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Heavy Truck Rollover Testing Methods

[+] Author Affiliations
Brian R. Herbst, Jack O. Bish

SAFE Laboratories, Goleta, CA

Steven E. Meyer, Arin O. Nelson, Stephen M. Forrest, Lauren D. Bell, Christopher C. Clarke

Safety Analysis & Forensic Engineering (S.A.F.E.), Goleta, CA

Paper No. IMECE2012-88364, pp. 197-205; 9 pages
doi:10.1115/IMECE2012-88364
From:
  • ASME 2012 International Mechanical Engineering Congress and Exposition
  • Volume 11: Transportation Systems
  • Houston, Texas, USA, November 9–15, 2012
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4527-1
  • Copyright © 2012 by ASME

abstract

Rollovers continue to be a major source of heavy truck fatalities when compared to other accident modes. Real world rollover accidents are analyzed and two distinct damage patterns are identified. Damage to heavy truck roofs can occur from lateral loading that transitions to vertical roof loading as the vehicle rolls onto its side and then over onto its roof. A second load path can occur when the vehicle has rolled onto its side and furrows into the ground generating large longitudinal friction forces between the roof and ground. A review of the previous literature and various test methodologies are presented. A sled impact test methodology is presented which allows for structural assessment of a heavy truck cab’s crashworthiness in both of these loading environments. Two test series are presented using the sled impact test methodology in order to analyze real world truck rollovers using varying impact platen and contact angles. The structural deformation and failure patterns were found to be consistent with damage seen in real world accident vehicles. In each case, a second equivalent truck cab was then reinforced and tested under similar conditions to evaluate the energy management and crush resistance of a stronger cab structure. These structural reinforcements demonstrated a substantial reduction in roof crush and protected the survival space of the occupant compartment.

Copyright © 2012 by ASME
Topics: Testing , Trucks

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