Encontrados 9 documentos, a visualizar página 1 de 1
Tuned liquid dampers simulation for earthquake response control of buildings
Novo, T.; Varum, H.; Teixeira-Dias, F.; Rodrigues, H.; Silva, M. J. Falcão; Costa, A. Campos; Guerreiro, L.This paper is focused on the study of an earthquake protection system, the Tuned Liquid Damper (TLD), which can, if adequately designed, reduce earthquake demands on buildings. This positive effect is accomplished taking into account the oscillation of the free surface of a fluid inside a tank (sloshing). The behaviour of an isolated Tuned Liquid Damper, subjected to a sinusoidal excitation at its base, with di...
On the evaluation of the mechanical behaviour of structural glass elements
Costa, S.; Miranda, M.; Varum, H.; Teixeira-Dias, F.Glass can be considered to be a high-technology engineering material with a multifunctional potential for structural applications. However, the conventional approach to the use of glass is often based only on its proper-ties of transparency and isolation. It is thus highly appropriate and necessary to study the mechanical behaviour of this material and to develop adequate methods and models leading to its chara...
Numerical analysis of large deformation processes at elevated temperatures
Andrade-Campos, A.; Menezes, L. F.; Teixeira-Dias, F.The authors describe a theoretical model and kinematic approach suitable for the numerical analysis of problems at large deformation finite strains and rotations. The presented formulations are implemented incrementally with a non-linear and rate-dependent constitutive model, adequate to the simulation of high temperature processes. The large deformation kinematic model is based on the additive decomposition of...
As Potencialidades do vidro como material estrutural
Costa, S.; Miranda, M.; Varum, H.; Teixeira-Dias, F.Resumo não disponível...
Reforço de edifícios existentes de betão armado com contraventamentos metálicos
Marques, P.; Teixeira-Dias, F.; Varum, H.Foi calibrado um modelo numérico refinado para a reprodução do comportamento de estruturas existentes de betão armado, e do seu reforço por contraventamento, face a solicitações sísmicas. Estes modelos foram calibrados com base numa série de ensaios.
On the Evaluation of the Mechanical Behaviour of Structural Glass Elements
Costa, S.; Miranda, M.; Varum, H.; Teixeira-Dias, F.Glass can be considered to be a high-technology engineering material with a multifunctional potential for structural applications. However, the conventional approach to the use of glass is often based only on its properties of transparency and isolation. It is thus highly appropriate and necessary to study the mechanical behaviour of this material and to develop adequate methods and models leading to its charac...
Estratégias de optimização numérica para o cálculo não-linear de estruturas ret...
Teixeira-Dias, F.; Oliveira, J. A.; Varum, H.A realização de análises pelo Método dos Elementos Finitos baseadas em modelos de comportamento elásticos e lineares resulta, em determinadas aplicações, em previsões limitadas do comportamento real das estruturas. No trabalho que aqui se apresenta descreve-se um modelo de optimização aplicável ao cálculo numérico do comportamento não-linear de estruturas reticuladas. O modelo descrito actua directamente sobre ...
A kinematic and incremental integration model for the micromechanical numerical...
Teixeira-Dias, F.; Menezes, L. F.http://www.sciencedirect.com/science/article/B6TWM-45WGHFB-G/1/7596e116cb23316ae08274651c2b1d7a
Numerical aspects of finite element simulations of residual stresses in metal m...
Teixeira-Dias, F.; Menezes, L. F.When a metal matrix composite (MMC) is cooled down from the fabrication or annealing temperature to room temperature, residual stresses are induced in the composite due to the mismatch of the thermal expansion coefficients of the matrix and reinforcement. A thermomechanical model describing these processes is presented considering that the reinforcement component has a thermo-elastic behaviour and that the matr...
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