Finite State Space
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. Modeling the creep behavior of GRFP truss structures with Positional Finite Element Method
Abstract This paper presents the development of a formulation, based on Positional Finite Element Method, to describe the viscoelastic mechanical behavior of space trusses. The numerical method used was chosen due to its efficiency in the applications concerning nonlinear numerical analyses. The formulation describes the positional variation over time under
Lat. Am. j. solids struct.. Publicado em: 26/04/2018
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2. Simulação computacional de escoamentos reativos com baixo número Mach aplicando técnicas de refinamento adaptativo de malhas / Computational simulation of low Mach number reacting flows applying adaptive mesh refinement techniques.
It is the main goal of the present work to extend a numerical methodology based on both the use of an adaptive mesh refinement technique (AMR) and the use of a multistep, implicit-explicit time-step strategy (IMEX) to applications involving low Mach number reactive flows. Originally developed for incompressible flows, the Eulerian formulation of that methodo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/06/2012
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3. Active vibration control of a piezoelectric beam using PID controller: Experimental study
Vibration suppression of smart beams using the piezoelectric patch structure is presented in the present work. The smart system consists of a beam as the host structure and piezoceramic patches as the actuation and sensing elements. An experimental set-up has been developed to obtain the active vibration suppression of smart beam. The set-up consists of a sm
Lat. Am. j. solids struct.. Publicado em: 2012-12
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4. Análise numérica 3D do túnel auxiliar a jusante da UHE simplício-anta / 3D Numerical analysis of the tunnel downstream of the auxiliary
With the accelerated occupation of the space, the use of tunnels play an important role in engineering, in this sense, the deformations control during it s construction process is very important for the best performance of tunnels. In this sense the numerical analyzes represent a likely economy in the design process. This paper uses a theory of elasticity in
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/08/2011
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5. Exogenous expectations on endogenous uncertainty: recursive equilibrium and survival
This paper analyses general equilibrium models with finite heterogeneous agents having exogenous expectations on endogenous uncertainty. It is shown that there exists a recursive equilibrium with the state space consisting of the past aggregate portfolio distribution and the current state of the nature and that it implements the sequential equilibrium. We es
Escola de Pós-Graduação em Economia da FGV. Publicado em: 18/04/2011
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6. Limitantes para Códigos de Peso Constante / Bounds for Constant-Weight Codes
The main purpose of this dissertation was to construct lower and upper bounds for the cardinality of the error correcting codes for constant-weight, contained in the vector space Fn 3 , where F3 is a field with three elements, knowing parameters such as length and minimum distance code. We present the main results of linear algebra necessary to develop the t
Publicado em: 2011
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7. Nonlinear turbulent transonic flow phenomena influence on aeroelastic stability analysis.
The present work is aimed at studying the influence of viscous effects in transonic aeroelastic analyses. To achieve this goal, a two-dimensional and viscous aeroelastic computational solver, for CAE analysis, is developed, which uses unstructured computational meshes and which is able to capture the main aeroelastic phenomena relevant in the transonic regim
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/12/2010
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8. Nonlinear turbulent transonic flow phenomena influence on aeroelastic stability analysis.
The present work is aimed at studying the influence of viscous effects in transonic aeroelastic analyses. To achieve this goal, a two-dimensional and viscous aeroelastic computational solver, for CAE analysis, is developed, which uses unstructured computational meshes and which is able to capture the main aeroelastic phenomena relevant in the transonic regim
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/12/2010
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9. Finite element analysis of actively controlled smart plate with patched actuators and sensors
The active vibration control of smart plate equipped with patched piezoelectric sensors and actuators is presented in this study. An equivalent single layer third order shear deformation theory is employed to model the kinematics of the plate and to obtain the shear strains. The governing equations of motion are derived using extended Hamilton's principle. L
Latin American Journal of Solids and Structures. Publicado em: 2010-09
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10. Estimação paramétrica e não-paramétrica em modelos de markov ocultos
In this work we study the Hidden Markov Models with nite as well as general state space. In the nite case, the forward and backward algorithms are considered and the probability of a given observed sequence is computed. Next, we use the EM algorithm to estimate the model parameters. In the general case, the kernel estimators are used and to built a sequence
Publicado em: 2010
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11. Test case generation for space area systems using test criteria for finite state machines / Geração de casos de teste para sistemas da área espacial usando critérios de teste para máquinas de estados finitos
Test case generation based on Finite State Machines (FSM) has been addressed for quite some time. Model-Based Testing has drawn attention from researchers and practitioners in test area. Several test criteria have been proposed in the literature in order to validate systems built according to some modeling formal technique, for example, the FSM. Through MEF
Publicado em: 2010
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12. Structured high resolution algorithms in the solution of the euler equations in the two-dimensional space
The present work compares the high resolution schemes of (1) Yee, Warming and Harten, (2) Harten, (3) Yee and Kutler and (4) Hughson and Beran applied to the solution of aeronautical and aerospace problems. All schemes are TVD flux difference splitting type and are second order accurate in space. The Euler equations in conservative form, employing a finite v
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2008-06