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research-article

EFFECTS OF LOADING CONDITIONS AND SKULL FRACTURE ON LOAD TRANSFER TO HEAD

[+] Author and Article Information
Timothy G Zhang

US Army Research Laboratory, Aberdeen Proving Ground, MD 21005
gazhang1@vt.edu

Kimberly Thompson

US Army Research Laboratory, Aberdeen Proving Ground, MD 21005
kimberly.a.thompson170.civ@mail.mil

Sikhanda Satapathy

US Army Research Laboratory, Aberdeen Proving Ground, MD 21005
sikhanda.s.satapathy.civ@mail.mil

1Corresponding author.

ASME doi:10.1115/1.4037647 History: Received March 22, 2017; Revised August 08, 2017

Abstract

This study focuses on the effect of skull fracture on the load transfer to the head for low-velocity frontal impact of the head against a rigid wall or being impacted by a heavy projectile. The skull was modeled as a cortical-trabecular-cortical layered structure in order to better capture the skull deformation and consequent failure. The skull components were modeled with an elastoplastic with failure material model. Different methods were explored to model the material response after failure, such as eroding element technique, conversion to fluid, and conversion to SPH (smoothed particle hydrodynamics) particles. The load transfer to the head was observed to decrease with skull fracture.

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