This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Test Methodology and Initial Results from a Dynamic Rollover Test System
Technical Paper
2013-01-0468
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The goal of this study is to present the methods employed and results obtained during the first six tests performed with a new dynamic rollover test system. The tests were performed to develop and refine test methodology and instrumentation methods, examine the potential for variation in test parameters, evaluate how accurately actual touchdown test parameters could be specified, and identify problems or limitations of the test fixture. Five vehicles ranging in size and inertia from a 2011 Toyota Yaris (1174 kg, 379 kg m₂) to a 2002 Ford Explorer (2408 kg, 800 kg m₂) were tested. Vehicle kinematic parameters at the instant of vehicle-to-road contact varied across the tests: roll rates of 211-268 deg/s, roll angles of 133-199 deg, pitch angles of -12 deg to 0 deg, vertical impact velocities of 1.7 to 2.7 m/s, and road velocities of 3.0-8.8 m/s. Vehicle instrumentation included three angular rate sensors and three linear accelerometers mounted near the vehicle CG; data from the sensor pack and a coordinate measurement machine facilitated analytical translation of the kinematics sensors to the actual vehicle CG and transformation of the kinematics parameters from the local to global reference frame. Actual touchdown parameters varied from goal test parameters due to limitations of the roll drive and drop-release systems. As a result of these limitations, these systems were modified or redesigned to eliminate variations between the goal and actual test parameters. Road load cells recorded peak contact loads that varied from 58 to 117 kN. Peak forces normalized by vehicle weight were shown to be both vehicle-specific and test-condition specific. The translating road surface and constrained roll-axis configuration of the test system was shown to produce similar energy transfer between translational and rotational energy as in unconstrained rollover crashes.
Recommended Content
| Technical Paper | Optical Measurement of High-Rate Dynamic Vehicle Roof Deformation during Rollover |
| Technical Paper | Test Sled Simulation of Crash Induced Yaw and Pitch |
Authors
- Jason R. Kerrigan - UVA Center for Applied Biomechanics
- Jeremy Seppi - UVA Center for Applied Biomechanics
- Jack Lockerby - UVA Center for Applied Biomechanics
- Patrick Foltz - UVA Center for Applied Biomechanics
- Brian Overby - UVA Center for Applied Biomechanics
- Jim Bolton - UVA Center for Applied Biomechanics
- Taewung Kim - UVA Center for Applied Biomechanics
- Nate J. Dennis - UVA Center for Applied Biomechanics
- Jeff Crandall - UVA Center for Applied Biomechanics
Citation
Kerrigan, J., Seppi, J., Lockerby, J., Foltz, P. et al., "Test Methodology and Initial Results from a Dynamic Rollover Test System," SAE Technical Paper 2013-01-0468, 2013, https://doi.org/10.4271/2013-01-0468.Also In
References
- Beard , D. A. , and Schlick , T. 2003 Unbiased Rotational Moves for Rigid-Body Dynamics Biophysical Journal 85 2973 2976
- Bortz , J. A new mathematical formulation for strapdown inertial navigation IEEE Transactions on Aerospace and Electronic Systems AES-7 1 January 1971
- Bixel , R. , Heydinger , G. , and Guenther , D. Measured Vehicle Center-of-Gravity Locations - Including NHTSA's Data Through 2008 NCAP SAE Technical Paper 2010-01-0086 2010 10.4271/2010-01-0086
- Chou , C. , McCoy , R. , and Le , J. 2005 A literature review of rollover test methodologies Int. J. Vehicle Safety 1 1/2/3 200 237
- Hanson , R. J. , & Norris , M. J. 1981 Analysis of Measurements Based on the Singular Value Decomposition Siam J. Sci. Stat. Comput. 2 3 363 373
- Heydinger , G. , Bixel , R. , Garrott , W. , Pyne , M. et al. Measured Vehicle Inertial Parameters-NHTSA's Data Through November 1998 SAE Technical Paper 1999-01-1336 1999 10.4271/1999-01-1336
- Funk , J. , Wirth , J. , Bonugli , E. , Watson , R. et al. An Integrated Model of Rolling and Sliding in Rollover Crashes SAE Technical Paper 2012-01-0605 2012 10.4271/2012-01-0605
- Kerrigan JR , Dennis NJ , Parent DP , Pursezov S et al. 2011 Test system, vehicle and occupant response repeatability evaluation in rollover crash tests: the deceleration rollover sled test International Journal of Crashworthiness 16 6 583 605 10.1080/13588265.2011.606996
- Kerrigan , J. , Jordan , A. , Parent , D. , Zhang , Q. et al. Design of a Dynamic Rollover Test System SAE Int. J. Passeng. Cars - Mech. Syst. 4 1 870 903 2011 10.4271/2011-01-1116
- Lockerby , J. , Kerrigan , J. , Seppi , J. , and Crandall , J. Optical Measurement of High-Rate Dynamic Vehicle Roof Deformation during Rollover SAE Technical Paper 2013-01-0470 2013 10.4271/2013-01-0470
- National Highway Traffic Safety Administration (NHTSA), U.S. Department of Transportation 2012 Traffic safety facts 2010 DOT HS 811 659 http://www-nrd.nhtsa.dot.gov/Pubs/811659.pdf
- National Highway Traffic Safety Administration (NHTSA) 2009 49 CFR Parts 571 and 585 Federal Motor Vehicle Safety Standards; Roof Crush Resistance; Phase-In Reporting Requirements; Final Rule Federal Register National Archives and Records Administration May 12 2009 www.regulations.gov
- O'Brien-Mitchell BM , Cassatta SJ , Giassson MA , Lange RC , Melocchi AG 2007 Data analysis methodology and observations from rollover sensor development tests Proceedings of the 20 th International Technical Conference on the Enhanced Safety of Vehicles. 07-305 http://www-nrd.nhtsa.dot.gov/departments/esv/20th/
- SAE Surface Vehicle Recommended Practice Instrumentation for Impact Test-Part 1-Electronic Instrumentation SAE Standard J211-1 March 1995
- Shames I. 1999 Engineering mechanics: statics and dynamics 4 th Prentice-Hall Inc. Upper Saddle River, N.J., USA