Non Linear Elasticity
Mostrando 1-12 de 17 artigos, teses e dissertações.
-
1. Free vibration analysis of nano-tubes consisted of functionally graded bi-semi-tubes by a two-steps perturbation method
Abstract Free vibration of a bimaterial circular nano-tube is investigated. The tube is formed by bonding together a Si3N4/SUS304 functionally graded upper semi tube and a ZrO2/Ti-6Al-4V functionally graded lower semi tube. The material properties of the tube are assumed to vary along the radius according to power law with the power index of upper semi tube
Lat. Am. j. solids struct.. Publicado em: 04/02/2019
-
2. A finite element study on the mechanical behavior of reciprocating endodontic files
AIM: To evaluate the mechanical behavior of reciprocating endodontic files, comparing nickel-titanium NiTi and stainless steel 316L St.St. 316L as manufacturing material for such instruments. METHODS: A three-dimensional finite element model was designed for this study. The simplified instrument model geometry was created on commercial CAD/CAM software. Rea
Braz. J. Oral Sci.. Publicado em: 2015-03
-
3. Determinação do impacto do oversizing da endoprótese sobre a aorta torácica. Estudo experimental em porcos / Impact of stent-graft oversizing on the thoracic aorta: experimental study in a porcine model
Introduction: The use of endovascular techniques to treat the various disorders of the aorta has supplanted traditional open techniques, and is particularly promising in trauma1. The traumatic rupture of the aorta is the second leading cause of death by traffic accident2, 3, and repair of these lesions with endoluminal stents has showed lower mortality and p
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/11/2012
-
4. Simulações Monte Carlo de integrais de trajetória : propriedades elásticas do 4He sólido / Path integrals Monte Carlo simulations : elastic properties of 4He
The path-integral Monte Carlo (PIMC) method is a sophisticated approach for the simulation of many-body quantum systems. In particular, it has been extensively used for the study of manybody bosonic systems such as 4He. The main objective of the present dissertation is to apply the PIMC method to determine the elastic constants of solid 4He in its hcp phase.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/11/2010
-
5. Propriedades tecnológicas de vigas de madeira laminada colada produzidas com louro-vermelho: (sextonia rubra)
The objective of this study was characterize the technological behavior of glulam beams (MLC) using the wood from Louro Vermelho (Sextonia rubra Lauraceae), through the evaluation of the adhesion with adhesive resorcinol-formaldehyde and evaluate theoretically and experimental the modulus of elasticity (EM), the modulus of rupture (fM), the bending moment (M
Publicado em: 2009
-
6. Coupled thermal and structural analysis of steel columns under fire condition / Análise termoestrutural de pilares de aço em situação de incêndio
The most part of materials whose constitute fire protection elements or structural elements, such as steel columns, when exposed to high temperature have their strength and elasticity modulus reduced caused by thermal action. Therefore the structure can collapse earlier than in an ambient temperature situation. Based in this aspect, the objective of the pres
Publicado em: 2009
-
7. A numerical study about the determination of parameters in an incompressible and linearly elastic solid / Estudo numérico sobre a determinação de parâmetros em um sólido elástico-linear e incompressível
The theory of classical linear elasticity is used to model of problems in medical physics that are related to the determination of elastic parameters of biological tissues from the measurement in vivo, or, in vitro of either displacements or strains. Based on experimental observations, which indicate that the abnormal biological tissues have different mechan
Publicado em: 2008
-
8. Análise limite de estruturas através de uma formulação em elasticidade não-linear
A avaliação numérica das cargas limites (de colapso) de estruturas é obtida geralmente ou pela aplicação direta dos teoremas de análise limite junto com processos de otimização ou mediante análises incrementais, que levam em consideração o comportamento elasto-plástico do material. Entretanto, ambas as estratégias conduzem eventualmente a dific
Publicado em: 2008
-
9. Boundary element method formulation for reinforced porous material / Formulação do método dos elementos de contorno para materiais porosos reforçados
In this work a nonlinear formulation of the boundary element method (BEM) is proposed to deal with saturated and unsaturated poro-elasto-plastic 2D reinforced domains. To model reinforced porous domains a BEM/FEM (Finite Element Method) modified coupling technique is employed. The coupling is made by using the least square method to regularize the displaceme
Publicado em: 2008
-
10. EFFICIENCY ASSESSMENT OF ADVANCED MODAL ANALYSIS AS COMPARED TO TECHNIQUES BASED ON NUMERICAL INVERSE TRANSFORMS / COMPARAÇÃO DO DESEMPENHO COMPUTACIONAL DA TÉCNICA DE SUPERPOSIÇÃO MODAL AVANÇADA COM TÉCNICAS DA TRANSFORMADA DE LAPLACE
An established technique to solve time-dependent problems is the formulation of a complete frequency-domain analysis via Laplace or Fourier transforms, with subsequent ad hoc expression of results by numerical inversion. Although usually easy to implement, such a transform inversion is computationally intensive, if accurate results are desired, and liable to
Publicado em: 2008
-
11. Sobre metodologias de modelagem computacional de propagação de trincas por fadiga em fuselagens aeronáuticas. / On computacional modeling methodologies of fatigue crack propagation in aircraft fuselages.
A methodology for modeling fatigue crack growth in pressurized, stiffened, thin shell structures is implemented within a software framework that consists of a fracture simulation code associated with a finite element analysis code. Crack trajetories are allowed to be arbitrary and are computed incrementally as a part of the simulation. Trajectories are repre
Publicado em: 2007
-
12. Simulação numérica do comportamento pós-fissuração de vigas de concreto armado pelo método dos elementos finitos / Numerical simulation for the post-cracking behavior of reinforced concrete beams by finite element method
This work presents a numerical method for the evaluation of internal forces and displacements in reinforced concrete straight beams considering cracking and the influence of longitudinal and transversal reinforcement. In order to simulate cracking behavior, the elasticity module of the cracked element is reduced depending on the dimensions of the finite elem
Publicado em: 2007