Finite element analysis dynamic simulation of projectile impact caliber .40 S&W in temporal bone with neural tissue

ABSTRACT

Temporal bone is often hit by projectiles. Temporal gunshot wounds must be deeply evaluated to establish wound morphology and stress distribution. Finite element analysis (FEA) is a promising tool that can support forensic aspects. A three-dimensional finite element model of a dry skull filled with neural soft tissue and a projectile .40 calibre S&W were obtained. Two situations were simulated: shot angle fired at 90° with and without neural soft tissue. The results exhibit different morphologies in bony entrance wounds as well as the strong influence of soft tissue. There was good reproducibility between bone and neural tissue real behaviour, and the finite element model that was built. In conclusion, the presence of neural soft tissue cannot be neglected in gunshot wounds, since it does alter results.

KEYWORDS:

• Finite element analysis
• neural soft tissue
• morphology
• skull biomechanics
• temporal bone
• gunshot wounds

Disclosure Statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) under Grant number #140976/2016-7.