A THREE-DIMENSIONAL COMPUTER SIMULATION OF A MOTOR VEHICLE CRASH VICTIM. FURTHER DEVELOPMENT-MUTUAL FORCE DEFLECTION
The Calspan Three-Dimensional Crash Victim Simulation (3-D) computer program has been developed further in an effort consisting of two primary tasks. First, a routine has been incorporated to compute the mutual force-deflection characteristics of contacting surfaces from the measured individual characteristics of these surfaces. In addition, a comprehensive diagnostic or "debug" facility for the program has been implemented to allow users to analyze computed results in varying degrees of detail. A series of simple tests was also performed to assess the assumptions used in the treatment of mutual force-deflection characteristics. In addition, the applicability of the Hertz contact stress theory, which was utilized in this treatment, was analyzed with these test results. The tests consisted of quasi-static force-deflection measurements on samples of basic geometrical shapes, fabricated of materials that are considered representative of contact surfaces in crash victim-motor vehicle interactions. The test results generally support the analytical treatment, but do indicate that limitations exist in this treatment of the complex problem of impact of nonelastic surfaces. A check on model validity for this version of the program was made by repeating the simulation of a nonplanar impact sled test previously used to assess validity. Inputs for this simulation included measured individual force-deflection characteristics of selected contacting surfaces. Program routines were used to compute the required mutual characteristics. Agreement of the simulation with the experimental results was found to be generally better than previously observed.
Calspan Corporation4455 Genesee Street
Buffalo, NY United States 14225
- Bartz, J A
- Bulter, F E
- Ryan, C T
- Publication Date: 1974-9
- Features: Figures; Photos; Tables;
- Pagination: 241 p.
- TRT Terms: Crash victims; Deflection; Force; Impact tests; Simulation
- Non-Preferred Terms: Three dimensional
- Old TRIS Terms: Contacting
- Subject Areas: Highways; Research; Safety and Human Factors;
- Accession Number: 00097172
- Record Type: Publication
- Source Agency: Highway Safety Research Institute
- Report/Paper Numbers: CAL ZQ-5326-V-2 Final Rpt.
- Contract Numbers: 7310-C224
- Files: TRIS
- Created Date: Sep 10 1975 12:00AM