ANALYTICAL CONSIDERATIONS OF HIC IN RELATION TO THE PROPOSED NEW FMVSS 201. FINAL REPORT
The reported study investigated the mathematical limits on reduction of Head Injury Criterion (HIC) that are imposed by interior-trim design constraints on maximum deflection during head impact to a component of a vehicle interior. The analysis was based on head deceleration profiles of idealized square and triangular shape. The results of the analysis suggest that the design goal for vehicle-interior components that can be contacted by the head should be to attain head deceleration profiles that are as nearly square in shape as possible (i.e., of constant deceleration level) and with minimal rebound. Tabular and graphical results are given. Triangular head deceleration profiles are similar to ones that occur during actual head impacts and they are, therefore, a useful model for study. However, the use of a triangular profile imposes a force-deflection relationship of particular form, so a triangular deceleration pulse shape is not an entirely reasonable model. A dynamic model, one which uses specifiable mass and force-deflection properties, is recommended for studying Free Motion Headform impacts as described in the proposed, new FMVSS 201.
- Sponsored by Venture Industries, Project Engineering, 33662 James J. Pompo Drive, P.O. Box 278, Fraser, Michigan 48026.
University of Michigan Transportation Research Institute2901 Baxter Road
Ann Arbor, MI United States 48109-2150
- Bowman, B M
- Publication Date: 1994-11-28
- Features: Appendices; Figures; Tables;
- Pagination: 24 p.
- TRT Terms: Deceleration; Deflection; Head; Injuries; Vehicle interiors
- Identifier Terms: Federal Motor Vehicle Safety Standards; FMVSS 201
- Uncontrolled Terms: Head injuries
- Old TRIS Terms: Head forms
- Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment; I84: Personal Injuries; I91: Vehicle Design and Safety;
- Accession Number: 00719359
- Record Type: Publication
- Source Agency: National Highway Traffic Safety Administration
- Report/Paper Numbers: UMTRI-94-40, HS-041 885
- Files: HSL, TRIS, USDOT
- Created Date: Mar 4 1996 12:00AM