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|Title: ||Energy absorbing car seat designs for reducing whiplash|
|Authors: ||Himmetoglu, Selcuk|
Taylor, Andrew J.
Car seat design
Human body model
|Issue Date: ||2008|
|Publisher: ||© Taylor & Francis Group, LLC|
|Citation: ||HIMMETOGLU, S. ... et al, 2008. Energy absorbing car seat designs for reducing whiplash. World Congress on Neck Pain, 20th-22nd January 2008, The Hyatt Regency Century Plaza, Los Angeles, California.|
|Abstract: ||Objectives: This study presents an investigation of anti-whiplash features that can be implemented in a car seat to reduce whiplash injuries in the case of a rear impact. The main emphasis is on achieving a seat design with good energy absorption properties.
Methods: A biofidelic 50th percentile male multi-body human model for rear impact is developed to evaluate the performance of car seat design concepts. The model is validated using the responses of 7 volunteers from the Japanese Automobile Research Institute (JARI) sled tests, which were performed at an impact speed of 8 kph with a rigid seat and without head restraint and seatbelt. A generic multi-body car seat model is also developed to implement various seatback and recliner properties, anti-whiplash devices, and head restraints. Using the same driving posture and the rigid seat in the JARI sled tests as the basic configuration, several anti-whiplash seats are designed to allow different types of motion for the seatback and seat-pan.
Results: The anti-whiplash car seat design concepts limit neck internal motion successfully until the head-to–head restraint contact occurs and they exhibit low NICmax values (7 m2/s2 on average). They are also effective in reducing neck compression forces and T1 forward accelerations. In principle, these car seat design concepts employ controlled recliner rotation and seat-pan displacement to limit the formation of S-shape. This is accomplished by using anti-whiplash devices that absorb the crash energy in such a way that an optimum protection is provided at different severities.
Conclusions: The results indicate that the energy absorbing car seat design concepts all demonstrate good whiplash-reducing performances at the IIWPG standard pulse. Especially in higher severity rear impacts, two of the car seat design concepts reduce the ramping of the occupant considerably.|
|Description: ||This is an Author's Original Manuscript. This conference paper was subsequently published by Taylor & Francis Group in Traffic Injury Prevention on 4th December 2008, available online: http://www.tandfonline.com/10.1080/15389580802365767.|
|Version: ||Submitted for publication|
|Appears in Collections:||Conference Papers and Presentations (Mechanical, Electrical and Manufacturing Engineering)|
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