Development of a Computational Method to Predict Occupant Motions and Neck Loads During Rollovers 2005-01-0300
The mechanics of on-road, friction-induced rollovers were studied with the aid of a three-dimensional computer code specifically derived for this purpose. Motions of the wheels, vehicle body, occupant torso, and head were computed. Kane's method was utilized to develop the dynamic equations of motion in closed form. On-road rollover kinematics were compared to a dolly-type rollover at lesser initial speed, but generating a similar roll rotation rate. The simulated on-road rollover created a roof impact on the leading (driver's) side, while the dolly rollover simulation created a trailing-side roof impact. No head-to-roof contacts were predicted in either simulation. The first roof contact during the dolly-type roll generated greater neck loads in lateral bending than the on-road rollover. This work is considered to be the first step in developing a combined vehicle and occupant computational model for studying injury potential during rollovers.
Citation: Yamaguchi, G., Richards, D., Larson, R., Carhart, M. et al., "Development of a Computational Method to Predict Occupant Motions and Neck Loads During Rollovers," SAE Technical Paper 2005-01-0300, 2005, https://doi.org/10.4271/2005-01-0300. Download Citation
Gary T. Yamaguchi, Darrin Richards, Robert E. Larson, Michael R. Carhart, Robert S. Cargill, William Lai, Catherine Ford Corrigan
Exponent Failure Analysis Associates
SAE 2005 World Congress & Exhibition
Biomechanics 2005-SP-1929, SAE 2005 Transactions Journal of Passenger Cars: Mechanical Systems-V114-6