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Comparison of Gunshot Entrance Morphologies Caused by .40-Caliber Smith & Wesson, .380-Caliber, and 9-mm Luger Bullets: A Finite Element Analysis Study

Author

Listed:
  • Rodrigo Ivo Matoso
  • Alexandre Rodrigues Freire
  • Leonardo Soriano de Mello Santos
  • Eduardo Daruge Junior
  • Ana Claudia Rossi
  • Felippe Bevilacqua Prado

Abstract

Firearms can cause fatal wounds, which can be identified by traces on or around the body. However, there are cases where neither the bullet nor gun is found at the crime scene. Ballistic research involving finite element models can reproduce computational biomechanical conditions, without compromising bioethics, as they involve no direct tests on animals or humans. This study aims to compare the morphologies of gunshot entrance holes caused by.40-caliber Smith & Wesson (S&W), .380-caliber, and 9×19-mm Luger bullets. A fully metal-jacketed.40 S&W projectile, a fully metal-jacketed.380 projectile, and a fully metal-jacketed 9×19-mm Luger projectile were computationally fired at the glabellar region of the finite element model from a distance of 10 cm, at perpendicular incidence. The results show different morphologies in the entrance holes produced by the three bullets, using the same skull at the same shot distance. The results and traits of the entrance holes are discussed. Finite element models allow feasible computational ballistic research, which may be useful to forensic experts when comparing and analyzing data related to gunshot wounds in the forehead.

Suggested Citation

  • Rodrigo Ivo Matoso & Alexandre Rodrigues Freire & Leonardo Soriano de Mello Santos & Eduardo Daruge Junior & Ana Claudia Rossi & Felippe Bevilacqua Prado, 2014. "Comparison of Gunshot Entrance Morphologies Caused by .40-Caliber Smith & Wesson, .380-Caliber, and 9-mm Luger Bullets: A Finite Element Analysis Study," PLOS ONE, Public Library of Science, vol. 9(10), pages 1-8, October.
    • Handle: RePEc:plo:pone00:0111192
    DOI: 10.1371/journal.pone.0111192
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    Cited by:

    1. Kevin Bethke & Virgil Andrei & Klaus Rademann, 2016. "Decreasing the Effective Thermal Conductivity in Glass Supported Thermoelectric Layers," PLOS ONE, Public Library of Science, vol. 11(3), pages 1-19, March.

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