Minimal Effect of Amplified Vehicle Accelerations on Seat Belt Buckle Resistance to Inertial Release 2004-01-0854
Detailed investigations continually demonstrate that vehicle collision environments are extremely unlikely to produce accelerations of sufficient magnitude and duration to cause inertial release of seat belt buckles. Recently, it has been proposed that the dynamic response of an end-release buckle mounted to the vehicle structure via a metal strap or wire rope can amplify acceleration levels experienced at the floor of the vehicle by a factor of 10 or more, to levels that are high enough to cause inertial release. Experiments and modeling presented here confirm that accelerations may be amplified from the floor of the vehicle to the seat belt buckle, but not by more than a factor of 1.3, and only for acceleration pulse durations that are very short. Shock table testing of end-release seat belt buckles shows that, even with amplification, the resulting buckle accelerations are far below those required to cause inertial release, even at very low webbing tension.
Citation: Davee, D., Van Arsdell, W., and Raasch, C., "Minimal Effect of Amplified Vehicle Accelerations on Seat Belt Buckle Resistance to Inertial Release," SAE Technical Paper 2004-01-0854, 2004, https://doi.org/10.4271/2004-01-0854. Download Citation
Author(s):
Daniel Davee, William Van Arsdell, Christine Raasch
Affiliated:
Exponent Failure Analysis Associates, Inc.
Pages: 11
Event:
SAE 2004 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Air Bags and Belt Restraints-SP-1876
Related Topics:
Safety belts
Vehicle acceleration
Drag
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