Browse Publications Technical Papers 2005-01-0945
2005-04-11

Analysis of a Prototype Electric Retractor, a Seat Belt Pre-Tensioning Device and Dummy Lateral Motion Prior to Vehicle Rollover 2005-01-0945

Vehicle motion prior to a rollover can influence an occupant's position in the vehicle. Lateral deceleration prior to a tripped rollover may cause the occupant to move outboard. This outboard motion may have several effects on the occupant such as, repositioning the occupant with relation to the seat and seat restraint, and allowing the occupant's head to travel further into the side curtain deployment zone. To reduce occupant lateral motion, the effectiveness of applying tension to the seatbelt was evaluated. The evaluation consisted of two test conditions simulating vehicle lateral motion prior to a trip using a Deceleration Rollover Sled [1]. The test conditions were designed to ensure a vehicle experiences a period of pure lateral motion before the onset of a lateral trip. A standard seat belt combined with various means of applying tension and activated at different times during the test were evaluated. The conclusions were based on analyzing the dummy lateral motion, belt loads, and dummy head and chest acceleration from these tests.

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