{"id":19232,"date":"2018-03-09T09:08:09","date_gmt":"2018-03-09T09:08:09","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/analisis-no-lineal-de-cubiertas-textiles\/"},"modified":"2018-03-09T09:08:09","modified_gmt":"2018-03-09T09:08:09","slug":"analisis-no-lineal-de-cubiertas-textiles","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-tecnologicas\/analisis-no-lineal-de-cubiertas-textiles\/","title":{"rendered":"An\u00e1lisis no-lineal de cubiertas textiles"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Ahmed Hassan Yousef <\/strong><\/h2>\n<p>Se analiza el comportamiento est\u00e1tico de mallas y membranas tesas (cubiertas textiles), desarrollando un m\u00e9todo original para encontrar las geometr\u00edas de equilibrio al solicitarlas con cargas permanentes (peso propio y pretensado) o transitorias (peso propio, pretensado y sobrecargas). Tambi\u00e9n se determinan los patrones de fabricaci\u00f3n para conseguir que el estado tensional sea siempre de tracci\u00f3n en todas las situaciones y sin solicitar en exceso el material. El an\u00e1lisis se basa en los m\u00e9todos de programaci\u00f3n matem\u00e1tica orientados a encontrar un m\u00ednimo relativo de una funci\u00f3n, el potencial total de la estructura, que depende de una serie de par\u00e1metros desconocidos, las coordenadas de los nudos en los que la estructura est\u00e1 en equilibrio.  se presenta la formulaci\u00f3n matem\u00e1tica que permite trabajar con movimientos grandes y deformaciones peque\u00f1as en los siguientes elementos:  1,- barras rectas que trabajan de forma lineal a tracci\u00f3n y a comprensi\u00f3n (bielas).  2,- barras rectas que trabajan de forma lineal a tracci\u00f3n y se comban al intentar comprimirlas (cable recto traccionado).  3,- cables tendidos entre dos puntos y solicitados a peso propio (cable catenaria).  4,- elementos triangulares de membrana tesa que responde linealmente a tracci\u00f3n y se arrugan al intentar comprimirlos (tri\u00e1ngulo teso).  se ha desarrollado un programa de ordenador para asistir en el dise\u00f1o de cubiertas textiles, asimil\u00e1ndolas a un entramado espacial formado por cables rectos traccionados unidos en nudos articulados. El an\u00e1lisis consta de tres fases: la primera se orienta a definir la geometr\u00eda cero de la estructura despu\u00e9s de pretensarla y ajustando las longitudes de construcci\u00f3n de los elementos para centrar las tensiones de tracci\u00f3in en el rango admisible, la segunda determina los movimientos y esfuerzos inducidos por las sobrecargas y, por \u00faltimo, se termina de ajustar las longitudes de construcci\u00f3n para que, en todas las si<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>An\u00e1lisis no-lineal de cubiertas textiles<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 An\u00e1lisis no-lineal de cubiertas textiles <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Ahmed Hassan Yousef <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Valencia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 27\/09\/2002<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li> Atienza Reales Jos\u00e9 Ram\u00f3n<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: jos\u00e9 Soler sanz <\/li>\n<li>Juan Rovira soler (vocal)<\/li>\n<li>Rafael L\u00f3pez palanco (vocal)<\/li>\n<li>ram\u00f3n Irle m\u00e1s (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Ahmed Hassan Yousef Se analiza el comportamiento est\u00e1tico de mallas y membranas tesas (cubiertas textiles), desarrollando un [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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