{"id":13302,"date":"2023-10-17T08:43:57","date_gmt":"2023-10-17T11:43:57","guid":{"rendered":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=13302"},"modified":"2023-10-17T08:43:57","modified_gmt":"2023-10-17T11:43:57","slug":"estudio-numerico-y-experimental-del-rendimiento-de-un-modulo-de-proteccion-balistica-contra-impactos-de-proyectiles-de-alta-velocidad-desarrollado-con-espuma-modificada-con-gel","status":"publish","type":"post","link":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=13302","title":{"rendered":"Estudio num\u00e9rico y experimental del rendimiento de un m\u00f3dulo de protecci\u00f3n bal\u00edstica contra impactos de proyectiles de alta velocidad, desarrollado con\u00a0espuma modificada con gel"},"content":{"rendered":"<p>Los chalecos de protecci\u00f3n personal juegan un importante rol dentro del equipamiento provisto a los individuos, para protejerlos del impacto de proyectiles de alta velocidad, principalmente en el torso. El presente trabajo de investigaci\u00f3n consiste en un estudio num\u00e9rico y experimental, sobre un m\u00f3dulo bal\u00edstico de capas amortiguadoras, que incorporan gel resistente al corte (STG) junto con espuma de etileno &#8211; acetato de vinilo (EVA). Todo ello con el objetivo de reducir los efectos del trauma por impacto que el torso debe soportar.\u00a0(BABT \u2013 Behind Armour Blunt Trauna).<\/p>\n<hr \/>\n<p class=\"section-title u-h4 u-margin-l-top u-margin-xs-bottom\"><strong>Abstract<\/strong><\/p>\n<div id=\"abssec0010\">\n<p id=\"abspara0010\">As one of the most widely used personal protective equipment (PPE), body armors play an important role in protecting the human body from the high-velocity impact of bullets or projectiles. The body torso and critical organs of the wear may suffer severe behind-armor blunt trauma (BABT) even though the impactor is stopped by the body armor. A type of novel composite material through incorporating shear stiffening gel (STG) into ethylene-vinyl acetate (EVA) foam is developed and used as buffer layers to reduce BABT. In this paper, the protective performance of body armors composed of fabric bulletproof layers and a buffer layer made of foam material is investigated both experimentally and numerically. The effectiveness of STG-modified EVA in damage relief is verified by ballistic tests. In parallel with the experimental study, numerical simulations are conducted by LS-DYNA\u00ae to investigate the dynamic response of each component and capture the key mechanical parameters, which are hardly obtained from field tests. To fully describe the material behavior under the transient impact, the selected constitutive models take the failure and strain rate effect into consideration. A good agreement between the experimental observations and numerical results is achieved to prove the validity of the modelling method. The tests and simulations show that the impact-induced deformation on the human body is significantly reduced by using STG-modified EVA as the buffering material. The improvement of protective performance is attributed to better dynamic properties and more outstanding energy absorption capability of the composite foam.<\/p>\n<p><a href=\"https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2023\/10\/1-s2.0-S2214914723002726-main.pdf\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" class=\"aligncenter wp-image-5168\" src=\"https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2020\/02\/icono-PDF-1-150x150.png\" alt=\"Descargar archivo pdf\" width=\"75\" height=\"93\" srcset=\"https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2020\/02\/icono-PDF-1-243x300.png 243w, https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2020\/02\/icono-PDF-1.png 310w\" sizes=\"(max-width: 75px) 100vw, 75px\" \/><\/a><strong>Fuente:<\/strong> <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S2214914723002726\" target=\"_blank\" rel=\"noopener\"><em>https:\/\/www.sciencedirect.com<\/em><\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Los chalecos de protecci\u00f3n personal juegan un importante rol dentro del equipamiento provisto a los individuos, para protejerlos del impacto de proyectiles de alta velocidad,&hellip; <\/p>\n","protected":false},"author":1,"featured_media":13303,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[18,24],"tags":[],"_links":{"self":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/13302"}],"collection":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=13302"}],"version-history":[{"count":1,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/13302\/revisions"}],"predecessor-version":[{"id":13305,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/13302\/revisions\/13305"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/media\/13303"}],"wp:attachment":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13302"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=13302"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13302"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}