{"id":16424,"date":"2025-01-25T06:30:22","date_gmt":"2025-01-25T09:30:22","guid":{"rendered":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=16424"},"modified":"2025-01-25T06:30:22","modified_gmt":"2025-01-25T09:30:22","slug":"estructuras-celulares-hibridas-autosimilares-inspiradas-en-telaranas-y-panales-de-abejas-para-aplicaciones-de-proteccion-al-impacto","status":"publish","type":"post","link":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=16424","title":{"rendered":"Estructuras celulares h\u00edbridas autosimilares inspiradas en telara\u00f1as y panales de abejas para aplicaciones de protecci\u00f3n al impacto"},"content":{"rendered":"

Investigadores del\u00a0Indian Institute of Technology Bhubaneswar<\/span>,\u00a0han desarrollado nuevas estructuras celulares h\u00edbridas de tipo panal y telara\u00f1a, inspiradas en los dise\u00f1os similares de la naturaleza, para lograr una absorci\u00f3n de energ\u00eda eficiente en situaciones de impacto. Estas estructuras se han optimizado en cuanto a geometr\u00eda y topolog\u00eda para mejorar la absorci\u00f3n de energ\u00eda ante el impacto de una masa determinada. Los dise\u00f1os optimizados se sometieron a pruebas bajo cargas din\u00e1micas, como aplastamiento e impactos de proyectiles a alta velocidad. Se lograron\u00a0eficiencias de aplastamiento superiores al 95 %, superando los dise\u00f1os tradicionales. Se utilizaron dise\u00f1os de celdas unitarias similares jer\u00e1rquicas a partir del an\u00e1lisis de aplastamiento para crear n\u00facleos para estructuras tipo s\u00e1ndwich. Las pruebas de impacto de munici\u00f3n calibre 9×19 mm mostraron que estas estructuras tipo s\u00e1ndwich resisten velocidades de impacto de hasta 170 m\/s y 270 m\/s, respectivamente, compensando los dise\u00f1os en cada etapa para evitar zonas d\u00e9biles y lograr una resistencia al impacto uniforme.<\/p>\n

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Abstract<\/strong><\/p>\n

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Inspired by nature’s self-similar designs, novel honeycomb-spiderweb based self-similar hybrid cellular structures are proposed here for efficient energy absorption in impact applications. The energy absorption is enhanced by optimizing the geometry and topology for a given mass. The proposed hybrid cellular structure is arrived after a thorough analysis of topologically enhanced self-similar structures. The optimized cell designs are rigorously tested considering dynamic loads involving crush and high-velocity bullet impact. Furthermore, the influence of thickness, radial connectivity, and order of patterning at the unit cell level are also investigated. The maximum crushing efficiency attained is found to be more than 95%, which is significantly higher than most existing traditional designs. Later on, the first and second-order hierarchical self-similar unit cell designs developed during crush analysis are used to prepare the cores for sandwich structures. Impact tests are performed on the developed sandwich structures using the standard 9-mm parabellum. The influence of multistaging on impact resistance is also investigated by maintaining a constant total thickness and mass of the sandwich structure. Moreover, in order to avoid layer-wise weak zones and hence, attain a uniform out-of-plane impact strength, off-setting the designs in each stage is proposed. The sandwich structures with first and second-order self-similar hybrid cores are observed to withstand impact velocities as high as 170 m\/s and 270 m\/s, respectively.<\/div>\n<\/div>\n
\"Descargar<\/a>Fuente:<\/strong> https:\/\/www.sciencedirect.com<\/em><\/a><\/div>\n","protected":false},"excerpt":{"rendered":"

Investigadores del\u00a0Indian Institute of Technology Bhubaneswar,\u00a0han desarrollado nuevas estructuras celulares h\u00edbridas de tipo panal y telara\u00f1a, inspiradas en los dise\u00f1os similares de la naturaleza, para… <\/p>\n","protected":false},"author":1,"featured_media":16425,"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\/16424"}],"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=16424"}],"version-history":[{"count":1,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/16424\/revisions"}],"predecessor-version":[{"id":16427,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/16424\/revisions\/16427"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/media\/16425"}],"wp:attachment":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=16424"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16424"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16424"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}