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Biorid I-A New Biofidelic Rear Impact Dummy
Technical Paper
1998-13-0026
Published September 16, 1998 by International Research Council on Biokinetics of Impact in Switzerland
Sector:
Language:
English
Abstract
Although most seat systems offer limited protection against neck
injuries in rear-end collisions, there is currently no established
method for performance testing of these systems in rear-end
impacts. The most important component for such a test method is a
crash test dummy. Several investigators have noted limitations of
the most commonly used dummy in rear impact testing, the Hybrid
III.
The objectives of this study have been to develop a new dummy
for low speed rear-end collision testing and validate it against
volunteer data. The dummy has a new articulated thoraco-lumbar and
cervical spine and a torso of silicon rubber. The neck and the
thoraco-lumbar spine consist of 24 vertebrae, the same number of
vertebrae as in the human, which are connected by hinge joints. The
motion of the head and neck is partly controlled by muscle
substitutes. Linear torsion springs and polyurethane bumpers
provide the resistance to flexion and extension in the thoracic and
lumbar spine. The dummy is equipped with Hybrid III legs, arms,
head and a modified Hybrid III pelvis.
The complete dummy prototype was validated against volunteer
test data and its performance compared to that of the Hybrid III
dummy. The kinematics of this dummy prototype showed more human
like kinematics in rear end impacts at ΔV=7 km/h compared to the
Hybrid III.
Authors
- Johan Davidsson - Chalmers University of Technology
- Mats Y. Svensson - Chalmers University of Technology
- Anders Flogård - Chalmers University of Technology
- Yngve Håland - Autoliv AB Research
- Lotta Jakobsson - Volvo Car Corporation
- Astrid Linder - Chalmers University of Technology
- Per Lövsund - Chalmers University of Technology
- Kristina Wiklund - Saab Automobile AB