Refinement of the PROMETHEUS III computer model of human crash dynamics to simulate the performance of energy absorbing seats is described. Calibration against test data for a plastically deforming seat is presented. Some of the characteristics that are concluded to have been important to achieving the calibration are discussed. General techniques for using the model to produce engineering trade-off data are also discussed, including exploration of alternate seating concepts. Emphasis is given to the critical need to verify model prediction capability based on calibrations using actual test data as a prerequisite to engineering acceptance and usage.
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