Model Framework for Shock Wave Propagation in Layered Material Systems
Abstract
This proposal addresses the need for developing a fundamental understanding of the high frequency response in general, and shock wave transmission specifically, of polymeric materials through high rate and high frequency modeling of the mechanics of shock wave propagation for anisotropic, layered materials that could be elastic or visco-elastic in nature. Behind Helmet Blunt Trauma (BHBT) injuries arise in non-penetrating ballistic impact and blast events either as a result of direct contact of 1hc deforming helmet with the skull or from the pressure and impulse transmilted through the helmet to the skull and brain. Ri:cent preliminary modeling efforts have demonstrated that optimal layering of elastic and visco-elastic layers can significantly mitigate the transmission of harmful effects of impact and blast events, but this requires advances in our understanding of the very high frequency response of the time dependent layers. Moreover, the effects of anisotropy (ply orientation) and interfaces on limiting backface deformation are not well understood. This work will explore the transmission of blast and impact induced stress waves through anisotropic elastic and visco-elastic polymeric layers via computation and analysis.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 12, 2017
- Source ID
- W911NF1510516
Entities
People
- Ellen M. Arruda
Organizations
- Army Contracting Command
- United States Army
- University of Michigan