Upper and lower neck loads in belted human surrogates in frontal impacts.

Upper and lower neck loads in belted human surrogates in frontal impacts. Ann Adv Automot Med. 2012;56:125-36 Authors: Yoganandan N, Pintar FA, Moore J, Rinaldi J, Schlick M, Maiman DJ Abstract The upper and lower neck loads in the restrained Hybrid III dummy and Test Device for Human Occupant Restraint (THOR) were computed in simulated frontal impact sled tests at low, medium, and high velocities; repeatability performance of the two dummies were evaluated at all energy inputs; peak forces and moments were compared with computed loads at the occipital condyles and cervical-thoracic junctions from tests using post mortem human surrogates (PMHS). A custom sled buck was used to position the surrogates. Repeated tests were conducted at each velocity for each dummy and sufficient time was allowed to elapse between the two experiments. The upper and lower neck forces and moments were determined from load cell measures and its locations with respect to the ends of the neck. Both dummies showed good repeatability for axial and shear forces and bending moments at all changes in velocity inputs. Morphological characteristics in the neck loading responses were similar in all surrogates, although the peak magnitudes of the variables differed. In general, the THOR better mimicked the PMHS response than the Hybrid III dummy, and factors such as neck design and chest compliance were attributed to the observed variations. While both dummies were no...
Source: Annals of Advances in Automotive Medicine - Category: Global & Universal Tags: Ann Adv Automot Med Source Type: research