Geometrical Nonlinearity
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Analytical solution for nonlinear dynamic behavior of viscoelastic nano-plates modeled by consistent couple stress theory
Abstract This paper analyses the non-stationary free vibration and nonlinear dynamic behavior of the viscoelastic nano-plates. For this purpose, a size-dependent theory is developed in the framework of the consistent couple stress theory for viscoelastic materials. The previously presented modified couple stress theory was based on some consideration making
Lat. Am. j. solids struct.. Publicado em: 17/09/2018
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2. Structural Behavior of RC Beams Containing a Pre- Diagonal Tension Crack
Abstract This study focuses the light on the shear behavior of pre-cracked beams, and examines the feasibility of applying fracture mechanics concepts to widen the understanding of shear behavior and mechanisms. The experimental program contains ten beam specimens of high strength concrete (HSC) and steel fiber reinforced concrete (SFRC). Pre-cracks were emb
Lat. Am. j. solids struct.. Publicado em: 16/07/2018
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3. Structural analyses of reinforced tubular T-joints
Abstract The use of rolled hollow sections has been substantially boosted mainly due to the advantages associated with structural behavior and aesthetics, leading to an intense use in Europe, Southeast Asia, North America, Australia, and now, in Brazil due to the wider supply of these profiles. Therefore, it is important to investigate the structural behavio
Rem: Rev. Esc. Minas. Publicado em: 2016-03
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4. Nonlinear geometrical and physical analysis of cores of reinforced concrete tall buildings / Análise não linear geométrica e física de núcleos rígidos de edifícios altos em concreto armado
This work deals with nonlinear geometrical and physical analysis of structural cores that take part in the bracing system of multistory reinforced concrete buildings. The study depicts the structural behavior of concrete cores by using a computational tool that performs a strict non-linear analysis, coping with usual models based on the Finite Element Method
Publicado em: 2010
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5. Boundary element method formulation for reinforced plates with combined geometrical and material nonlinearities / Formulação do método dos elementos de contorno para placas enrijecidas considerando-se não-linearidades física e geométrica
Este trabalho tem como objetivo principal apresentar formulações do método dos elementos de contorno que contemplem as análises de placas considerando-se as não-linearidades física e geométrica e de placas enrijecidas considerando-se o comportamento não-linear físico do material. As equações integrais utilizadas são baseadas na teoria de Kirchhof
Publicado em: 2008
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6. Estudo de nós soldados tipo K de treliças planas constituídas por seções tubulares circulares de aço
The trusses of circular hollow sections, should be checked about last limit states of plastification and punching shear of chord wall. The standards AWS D1.1: 2002, ANSI /IACS 360-05 and EN 1993-1-8:2005 have virtually identical procedures for the verification of these limits states, based mainly in the works of Wardenier et al. (1991) and Packer and Henders
Publicado em: 2008
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7. Desenvolvimento de programa livre para análise de pórticos tridimensionais considerando-se a não linearidade geométrica, fissuração do concreto e ligações semi-rígidas
Structural analysis of framed structures using discrete method, wherein, splitting them into elements with simplified considerations, can bring not satisfactory results or end up using very high safety coefficient to the structure. With the growth of computing and microcomputers it is feasible the resolution of structures considering all parts, therefore thr
Publicado em: 2007
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8. Análise Não-Linear de Pórticos Tridimensionais Formados por Elementos Mistos de Aço e Concreto
The purpose of this dissertation is the development, implementation and test of numerical models for the Finite Element simulation of plain steel, reinforced concrete and composite steel-concrete three-dimensional frames. Physical (material) and geometrical nonlinearities are taken into account in the Finite Element formulation. At the cross section level, a
Publicado em: 2007
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9. Análise numérica do comportamento estrutural e da resistência de terças de aço restringidas pelas telhas / Numerical analysis of cold-formed purlin-sheeting systems focused on the structural behavior and strength
The structural behavior of purlin-sheeting system is complex and the complete analysis should consider the physical and geometrical nonlinearity, as well as the influence of the purlin-sheeting contact and connection. The brazilian code NBR 14762:2001 provides a design procedure to consider the interaction between a purlin or girt connected to the sheeting (
Publicado em: 2007
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10. Modelagem de pilares paredes em edifÃcios
Slender sky-scraper constructions require pondering prior analysis features like global and localized geometrical imperfection, physical and geometrical non-linearity aspects, adequate modeling of structural elements with respect to shear-wall elements, etc. In this work, the shear-wall behavior of an actual building is studied, upon which columns were model
Publicado em: 2002
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11. Um estudo de placas sob cargas dinamicas estacionarias e com o efeito da não linearidade geometrica sob cargas estaticas usando o metodo dos elementos de contorno
The Boundary Element Method was used to study plates with small strain hypotheses under classical theory. The geometrical non-linearity effect was considered to obtain in plane critical loads for homogeneous and isotropic plates. On the other hand, the natural frequencies of the plates were computed using the free vibration theory. Several plates were analyz
Publicado em: 2001
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12. Constitutive laws for strong geometric non-linearity
This paper is divided into two different parts. The first one provides a brief introduction to the fractal geometry with some simple illustrations in fluid mechanics. We thought it would be helpful to introduce the reader into this relatively new approach to mechanics that has not been sufficiently explored by engineers yet. Although in fluid mechanics, main
Journal of the Brazilian Society of Mechanical Sciences. Publicado em: 2000