Computational Approach to Identify Different Injuries by Firearms
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Sarah Teixeira Costa [1] ; Alexandre Rodrigues Freire [1] ; Rodrigo Ivo Matoso [1] ; Eduardo Daruge Júnior [1] ; Ana Cláudia Rossi [2] ; Felippe Bevilacqua Prado
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[1] University of Campinas Piracicaba São Paulo Brazil
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[2] University of Campinas Piracicaba São Paulo Brazi
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- Localización: Journal of forensic sciences, ISSN-e 1556-4029, ISSN 0022-1198, Vol. 62, Nº. 2, 2017, págs. 361-368
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
Complications arise in the analysis of gunshot wounds to the maxillofacial region, when neither the projectile nor the gun is found at the crime scene. We simulated 5- and 15-cm firing distances at a human mandible to investigate the external morphology of entrance wounds based on fire range. The ammunition models, .40-caliber S&W, .380-caliber, and 9 9 19-mm Luger, were constructed with free-form NURBS surfaces. In a dynamic simulation, projectiles were fired against mandibular body 3D model at 5 and 15 cm. All entrance wounds pre- sented oval aspect. Maximum diameter and von Mises stress values were 16.5 mm and 50.8 MPa, both for .40-caliber S&W fired at 5 cm. The maximum energy loss was 138.4 J for .40 S&W fired at 15 cm. In conclusion, the mandible was most affected by .40-caliber S&W and morphological differences were observable in holes caused by different incoming projectile calibers fired at different distances
