United States Department of Transportation
i
Rear-Seat Frontal Crash Protection Research with Application to Vehicles with Automated Driving Systems, Volume 1
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2022-09-01
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[PDF-67.86 MB]
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Abstract:This report explores crash outcomes when tests designed for frontal crash protection are run with rear-seat 50thpercentile male occupants. Seven vehicle bucks were constructed for use in sled testing. Twenty-five tests were conducted using a 1.4-MN Seattle Safety ServoSled. Three crash pulses were used for each vehicle: an “NCAP85” pulse (NCAP pulse scaled to delta V of 56 km/h), a “scaled” pulse (NCAP pulse scaled to delta V of 32 km/h), and a “generic” pulse that was the average of the scaled pulses. A THOR-50M ATD was positioned in the left-rear seat. The THOR-50M standard abdomen was replaced with a prototype abdomen containing dual pressure sensors. A Hybrid III ATD was positioned in the right-rear seat. Injury metrics were evaluated for both ATDs and injury risk was estimated for all metrics. Sixteen out of 25 tests resulted in some degree of submarining in the THOR-50M dummy. The Hybrid III did not submarine during any test. Hybrid III and THOR-50M responses were compared for tests having relatively better or worse occupant protection performance. Restraint system characteristics were examined. To assess the validity of ATD FE models, tests from six vehicles were modeled and then quantitatively compared to the test data and injury risks. The FE models performed well enough for use in parametric studies
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