Abstract
The impact forces due to accidental head impacts make the brain tissue distorted, twisted, and cause Traumatic Brain Injury (TBI). One way to predict the injury level is through simulations with appropriate material modeling and a computational framework. This work focuses on the Finite Element (FE) formulation of white matter responses to improve TBI predictions. Rate-dependent effects of white matter deformation are captured through the numerical implementation of an experimentally verified constitutive equation and nonlinear evolution equations of internal state variables. An ABAQUS UMAT is developed. One-element FE simulations are compared with the analytical and experimental results. Motivated by real-life scenarios, a few 3D Boundary Value Problems (BVPs) are solved to investigate the white matter responses.
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