Premium
Computational Approach to Identify Different Injuries by Firearms
Author(s) -
Costa Sarah Teixeira,
Freire Alexandre Rodrigues,
Matoso Rodrigo Ivo,
Daruge Júnior Eduardo,
Rossi Ana Cláudia,
Prado Felippe Bevilacqua
Publication year - 2017
Publication title -
journal of forensic sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.715
H-Index - 96
eISSN - 1556-4029
pISSN - 0022-1198
DOI - 10.1111/1556-4029.13387
Subject(s) - caliber , projectile , von mises yield criterion , ammunition , range (aeronautics) , rifle , mandible (arthropod mouthpart) , poison control , torso , materials science , orthodontics , structural engineering , anatomy , engineering , medicine , composite material , medical emergency , biology , botany , finite element method , metallurgy , genus
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 × 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 presented oval aspect. Maximum diameter and von Mises stress values were 16.5 mm and 50.8 MP a, 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.