This paper describes the conversion of a crash analysis program from its original batch program form with awkward input to an efficient, user-oriented interactive tool. The program simulates a vehicle occupant with a two dimensional, seven link mathematical model restrained by a seat belt and shoulder harness. A nonlinear finite element capability was added to enable modeling of a seat which would interact realistically with the occupant. A new differential equation solver was developed which achieved a sixty per cent reduction in the computer time required for the transient response analysis. The modified program incorporates user aids such as free-field data input and an on-line data edit capability. Output was reformatted to provide user-selected time history and occupant configuration plots as well as readable printout.
Citation: Karnes, R., Sebastian, J., Tocher, J., and Twigg, D., "A User-Oriented Program for Crash Dynamics," SAE Technical Paper 740331, 1974, https://doi.org/10.4271/740331. Download Citation
Author(s):
Richard N. Karnes, James D. Sebastian, James L. Tocher, David W. Twigg
Affiliated:
Boeing Computer Services, Inc.
Pages: 10
Event:
International Conference on Vehicle Structural Mechanics
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Mathematical models
Safety belts
Vehicle occupants
Historical reference
Technical review
Crashes
Simulation and modeling
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