Título:	Comportamento dinâmico de placas de Reissner-Mindlin utilizando o elemento finito quadrilátero lagrangeano de 16 nós
Autor(es):	Silva, Selênio Feio da
Orientador(es):	Pedroso, Lineu José
Assunto:	Teoria de placas Método dos elementos finitos
Data de publicação:	13-Abr-2020
Data de defesa:	3-Abr-1998
Referência:	SILVA, Selênio Feio da. Comportamento dinâmico de placas de reissner-mindlin utilizando o elemento finito quadrilátero lagrangeano de 16 nós. 1998. xx, 112 f., il. Dissertação (Mestrado em Estruturas)—Universidade de Brasília, Brasília, 1998.
Abstract:	In the present work is studied the dynamical behavoir of plates in free vibrations by the Reissner-Mindlin Theory and applying Finite Element Method regarding to solve the motion equation of slabs. The finite element used is the lagrangean quadrilateral with 16 nodes (QL- 16), the shape íunctions, stiffhess matrix and mass distribution models for such element are developed through following chapters of this work. A study about slendemess limit of this element (soltttion-locking effect) is also made, ratifying the fact of this effect appear only in QL-16 element, and for too small slenderness. Therefore, the stiffhess matrix building for such an element doesn’t need advanced and refined process, as imposed shear or even numeric integration (Gauss) which doesn’t use reduced or selective integration. Numeric results are obtained for slender slabs, as for semi-slender slabs, using four criterias respect to element mass distribution models (consistem. uniformly concentrated, concentrated by Lobato and row-sum concentrated) Such results are compared with analytical results, experimental and numeric ones, depending on the situation. For elliptical and circular slabs, the Hinton & Huang mesh description is adopted, whose results are verified for some boundary conditions in circular slabs, and some excentricity cases in elliptical slabs. Finally, among other several advantages, this research concludes that QL-16 element applied on rectangular, circular and elliptical slabs, leads to an optimized performance respect to accuracy, even when less refined mesh are used, which allows a cheaper computational design, because of proccessing time; new researches are hereby suggested, regarding to stretch this work.
Unidade Acadêmica:	Faculdade de Tecnologia (FT) Departamento de Engenharia Civil e Ambiental (FT ENC)
Informações adicionais:	Dissertação (mestrado)—Universidade de Brasília, Faculdade de Tecnologia, Departamento de Engenharia Civil e Ambiental, 1998.
Programa de pós-graduação:	Programa de Pós-Graduação em Estruturas e Construção Civil
Agência financiadora:	Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq).
Aparece nas coleções:	Teses, dissertações e produtos pós-doutorado

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