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Bibliographic Details
Main Author:	Fernando Roldan
Format:	Artículo científico
Language:	es
Published:	Universidad Nacional de Colombia 2002
Subjects:	Ingeniería Deformaciones Elementos Finitos Análisis de Esfuerzos
Online Access:	https://www.redalyc.org/articulo.oa?id=49613701
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Estudio Experimental y por Análisis de Elementos Finitos del Factor de Concentrador de Esfuerzo Producido por un Agujero en una Placa Plana Fernando Roldan Uriel Bastidas Ingeniería Deformaciones Elementos Finitos Análisis de Esfuerzos En el presente artículo se propone un método de trabajo basado en el Análisis por Elementos Finitos (FEA) y la Validación Experimental para el estudio de esfuerzos en medios elásticos. La formulación y desarrollo del análisis de los concentradores de esfuerzos sobre una placa de espesor constante sometida a esfuerzo en sus extremos, fueron verificados mediante la teoría de la elasticidad, experimentalmente y por el análisis de elementos finitos. La utilización de los métodos numéricos se caracterizó por su eficacia en la solución del problema planteado, proporcionando información confiable sobre los esfuerzos y deformaciones rápidamente y a muy bajo costo, comparada con los métodos experimentales 2002 artículo científico 0012-7353 https://www.redalyc.org/articulo.oa?id=49613701 es http://www.redalyc.org/revista.oa?id=496 Dyna application/pdf Universidad Nacional de Colombia Dyna (Colombia) Num.137 Vol.69

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// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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