Authors: Sakib Ul Islam, Kewei Bian, and Haojie Mao
Abstract
Detailed all-hexahedral solid head models were developed using an advanced blocking technique. A strategic O- grid core was implemented facilitating node-to-node connectivity and seamless mesh distribution across all scalp-skull-brain structures. Two models with 549,054 and 231,586 hexahedral elements representing lower- and higher-resolution mesh densities were tested. Additional models explored the effects of mesh density, pattern, as well as features such as variations of dura layer and cerebrospinal fluid. All models have a minimum Jacobian of 0.6, with 67% of elements having a Jacobian above 0.9. Preliminary validation involved two cadaver tests to assess brain pressure and displacement. This new modeling approach supports flexible changes in mesh density and morphing of individual brain components, improving the accuracy of personalized FE brain models when investigating head biomechanics, all with numerical stability even under severe loading conditions.
Type: Short Communication