Submitted by Johnny Rodrigues (johnnyrodrigues@ufcg.edu.br) on 2018-11-06T00:47:32Z
No. of bitstreams: 1
JOÃO AUGUSTO BARBOSA SOUSA - DISSERTAÇÃO PPGECA 1991..pdf: 20226382 bytes, checksum: eba1c136d21ab9224bc5d71dd5640c90 (MD5) / Made available in DSpace on 2018-11-06T00:47:32Z (GMT). No. of bitstreams: 1
JOÃO AUGUSTO BARBOSA SOUSA - DISSERTAÇÃO PPGECA 1991..pdf: 20226382 bytes, checksum: eba1c136d21ab9224bc5d71dd5640c90 (MD5)
Previous issue date: 1991-03-06 / Este trabalho consiste no desenvolvimento e apresentação de uma sistemática de cálculos que, utilizando elementos finitos e microcomputadores, permite dimensionar e posicionar fenômenos hidráulicos no interior dos sistemas, maciços, fundações e dispositivos de proteção das barragens de terra e rock-fill, quando esses se encontrarem em regime permanente e submetidos a variações de fluxo, nas fases de construção, operação e manutenção. Buscando-se atingir ao objetivo pretendido, elaborou-se um sistema de programas e arquivos que, integrados, possibilita a utilização do Programa
FPM500 de modo prático. O FPM500 trata dos escoamentos nos meios porosos,
confinados e não confinados, nos sistemas bidimensional e/ou tridimensional
com simetria de revolução. Entretanto, apesar de flexível, para o seu emprego, era grande a quantidade de dados de entrada a serem informados, diretamente, pelos usuários e, por ser acoplado a um gerador de malhas, aumentava o número de informações, levando esse, na versão original, a ser processado somente em computadores de grande porte. Na sistemática apresentada, inicia-se com um arquivo contendo informações relativas aos blocos estruturais. Um programa acoplado a um
renumerador processa essas e renumera todos os nós da malha de elementos,
assim reduzindo as bandas das matrizes de fluxo e otimizando memórias em
microcomputadores. Este recurso possibilita substancial ganho em velocidade,
em busca das soluções dos sistemas com múltiplas equações lineares simultâneas. Os dados resultantes deste processamento permitem a confecção de malhas integradas por elementos triangulares e/ou quadrilaterais lineares, no sistema bidimensional simultâneas. Os dados resultantes deste processamento permitem a confecção de malhas integradas por elementos triangulares e/ou quadrilaterais lineares, no sistema bidimensional / This dissertation deals with the development and the presentation as well of a systematics of calculus that, by making use of finite elements and microcomputers alike, enables both to settle the dimension and the position of hydraulic phenomena in the interior of systems, massifs, foundations and protection organs for earth and rock-fill dams, when the latter are to be found at everlasting rate and suodued to flood variations in the construction, operation and maintenance phases. In the search for an intended purpose, a program and files system was carried out which, once integrated, makes feasible the utilization of Program FPM500 in a practical way. Such a program (viz., FPM500) is related to flows in
porous enviroments, restrained or no restrained, in bidimensional and/or
tridimensional systems with revolution symmetry. However, despite being flexible
for its usage, the quantity of input data to be directly informed by users is huge
and, on account of its being coupled to a network generator, it increased the
number of informations so that it, at the long run, finished being processed only
mainframe computers. In the presented systematics, one begins with a file encompassing
informations related to structural blocks. A program coupled to a renumerator
processes them and numbers again ali nodes of the elements network by so
reducing the flow matrix bandwidth therefore de creasing storage requirements in the computer. Such resource enabls a substantial gain in speed in the systems with mutiple linear simultaneous equations. The data arising from that processing
enable the making of integrated networks by triangular and/or four-sided linear
elements in the bidimensional system. In another program, the data necessary to the studies of different hydric systems are completed. Therein the outputs of GETOP Program are resettled, the refomations dealing with the boundary conditions and with structural blocks. Such data are kept in files, appropriately shaped in a given format in order to
feed Program FPM500. Program FPM500 processes ali elaborated informations as it calculates loads, pressures and flows by providing a report with informations likely to
interest studies of hydraulic stability of earth and rock-fill dams. The presented methodology has the advantage to exclude the great amount of blunders committed on input data, in the usage of finite elements thrregh conventional processes. There is also the possibility of a future implementation of graphic programs for drawing element networks thrugh plotter or video. Thus, one is afforded to state that such a systematic, beyond facilitating the calculi, presents confidence and speed as it can be used in different practical equations, the aim of which is likely to be the previous knowledge of the
conditions of hydraulic stability in those structures.
| Identifer | oai:union.ndltd.org:IBICT/oai:localhost:riufcg/2130 |
| Date | 06 November 2018 |
| Creators | SOUSA, João Augusto Barbosa . |
| Contributors | LIMA, Aarão de Andrade., SRINIVASAN, Vajapeyan Srirangachar., CARVALHO, João Batista Queiroz de. |
| Publisher | Universidade Federal de Campina Grande, PÓS-GRADUAÇÃO EM ENGENHARIA CIVIL E AMBIENTAL, UFCG, Brasil, Centro de Tecnologia e Recursos Naturais - CTRN |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Biblioteca de Teses e Dissertações da UFCG, instname:Universidade Federal de Campina Grande, instacron:UFCG |
| Rights | info:eu-repo/semantics/openAccess |
Page generated in 0.0163 seconds