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Interaction of the Hybrid III Femur and Pelvis - A Mechanical Analysis
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English
Abstract
In air bag tests without a restraining seat belt (FMVSS208) several users of the Hybrid III dummy have reported a pelvic interference problem during the tests. An insufficient range of motion and a hard metal to metal contact between the pelvis and femur has lead to unexpected chest acceleration waveforms.
The paper gives a mechanical analysis of this phenomenon, explaining how the forces acting on the dummy lead to a rotation of the pelvis and femur and how forces arise between the pelvis and the chest. Finally two sample tests where the pelvic interference problem has occurred are presented.
Topic
Citation
Berge, S. and Planath-Skogsmo, I., "Interaction of the Hybrid III Femur and Pelvis - A Mechanical Analysis," SAE Technical Paper 950664, 1995, https://doi.org/10.4271/950664.Also In
Advances in Occupant Protection Technologies for the Mid-Nineties
Number: SP-1077; Published: 1995-02-01
Number: SP-1077; Published: 1995-02-01
References
- NHTSA Federal Motor Vehicle Safety Standard 208 - Occupant Crash Protection
- NHTSA “Anthropomorphic Test Dummy” Federal Register 38 147
- Backaitis, S.H. Mertz, H.J. “Hybrid III: The First Human-Like Crash Test Dummy” Publication PT-44 SAE Warrendale, PA 1994
- Adult Frontal Dummy Update SAE Task Force October 1994