Brain Strain from Motion of Sparse Markers

• DOI: 10.4271/2019-22-0001
• Publication Date: 2020-04-01T09:01:46Z
• Authors: Zhou Zhou; Xiaogai Li; Svein Kleiven; Warren N. Hardy
• Keywords: Strain (injury); Triad (sociology); Tetrahedron; Brain tissue

Brain strain secondary to head impact or inertial loading is closely associated with pathologic observations in the brain. The only experimental brain dataset under loadings close traumatic levels was calculated by imposing experimentally measured motion of markers embedded an auxiliary model formed triad elements (Hardy et al., 2007). However, fidelity as well suitability using for three-dimensional (3D) estimation remains be verified. Therefore, this study proposes use tetrahedron a new approach estimate strain. Fidelity newly-proposed along previous triad-based evaluated aid three independently-developed finite element (FE) models numerically replicating impacts and procedures. Strain preselected obtained from whole simulation exhibits good correlation its tetra exceeds estimation, indicating that more accurately estimates region. newly curves provide better approximations 3D deformation can used validation FE human head.