Biomedical subjects
Publications and source records attributed to James Guilkey.
The Material Point Method is used in the computational simulation of ballistic projectile damage to the heart. A transversely isotropic hyperelastic material model is used to model the myocardium. Computed estimates of tissue damage are used to characterize damaged tissue. The method's potential to estimate the damaged tissue in the complete torso is considered.
The objective of this research was to develop realistic computational models for soft tissues subjected to finite deformation and failure, and to test these models in the context of numerical simulations of penetrating trauma injuries. A transversely isotropic hyperelastic model with strain-based failure criteria was used to represent the behavior of anisotropic soft tissue. The constitutive model was implemented into an existing numerical code based on the Material Point Method (MPM). The penetration of a low-speed bullet through a myocardium material slab was simulated and several wounding scenarios were analyzed and compared. The material symmetry, the type of contact modeled between the bullet and the soft tissue and the bullet speed were shown to have a significant influence on the wound profile.