Three-dimensional response of a lumped parameter head-neck model due to impact and impulsive loading.

摘要: A numerical procedure developed previously for predicting sagittal-plane motion of the human head-neck system due to impact and impulsive loading has been extended three dimensions. In both situations, a lumped parameter approach is employed, but current model lumps mechanical response each intervertebral joint into single force-deformation relation evaluated from properties assembled by various investigators. Computations were performed obtain two-dimensional case flexion whiplash, one three-dimensional side skull another involving base acceleration normal sagittal plane. Agreement kinematic variables with results previous analysis experimental data volunteer run satisfactory, somewhat poorer correspondence was found predictions upon comparison obtained physical when subjected prescribed loading. The differences in are attributed higher stiffness facet separation relative structure volunteer, insufficient damping, as well substantial deformation characteristic components prototypes model.