Newton S Method
Mostrando 25-36 de 37 artigos, teses e dissertações.
-
25. Desenvolvimento de metodo implicito para simulador numerico tridimensional de escoamentos compressiveis inviscidos
The simulation of compressible flows considered inviscid is largely appliable to aeronautics. The development of such simulations using the Garlekin discontinuous method[7,12,16,20], wich presents the good characteristics of fine element and finite volume methods, benefitting from the polynomial interpolation within subdomains and discontinuous across interf
Publicado em: 2004
-
26. In-plane strain measurement by digital image correlation
This paper presents a "fast and simple" (FAS) detection algorithm based on the digital image correlation for measurement of the surface deformation of planar objects. The proposed algorithm uses only fine search at the pixel level resolution and surface fitting for sub-pixel level. Two different specimens are investigated to explore the feasibility of this p
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2003-09
-
27. Substitution-Newton-Raphson method applied to the modeling of a vapour compression refrigeration system using different representations of the thermodynamic properties of R-134a
This paper gives a detailed presentation of the Substitution-Newton-Raphson method, suitable for large sparse non-linear systems. It combines the Successive Substitution method and the Newton-Raphson method in such way as to take the best advantages of both, keeping the convergence features of the Newton-Raphson with the low requirements of memory and time o
Journal of the Brazilian Society of Mechanical Sciences. Publicado em: 2002-07
-
28. Modelagem matematica e simulação numerica de um sistema reacional composto por reatores tipo tanque agitado e tubular em processos de polimerização
The present work consists of a mathematical modeling and numerical simulation of a solution polymerization reaction, using as study case the polystyrene. The reaction system is composed by a continuous stirred tank reactor (CSTR) for prepolymerization, associated in series with a tubular reactor to carry out the reaction until high conversion values. A simpl
Publicado em: 2001
-
29. Escolha adiada do parametro de penalização e do tamanho de passo em algoritmos de pontos interiores
We study, in the context of interior-point methods for linear programming, some possible advantages of postponing the choice of the per. ",lty parameter and the step length, which happens both when we apply Newton s method to the Karush-Kuhn-Thcker system and when we apply a predictor-corrector scheme. We show that for a Newton or a strictly predictor step t
Publicado em: 2000
-
30. OTIMIZAÇÃO DE FORMA DE MODELOS BIDIMENSIONAIS DE ELEMENTOS FINITOS COM COMPORTAMENTO ELASTO-PLÁSTICO / OPTIMIZACIÓN DE FORMA DE MODELOS BIDIMENSIONALES DE ELEMENTOS FINITOS CON COMPORTAMIENTO ELÁSTICO-PLÁSTICO / SHAPE OPTIMIZATION OF 2D FINITE ELEMENT MODELS CONSIDERING ELASTO-PLASTIC BEHAVIOUR
The main goal of this work is to present an integrated system for the optimization of plane structures with elastoplastic behavior. The methodology proposes an alternative for the conservative way in which structures traditionally have been optimized, i.e., that they present linear elastic behavior. The computational system is said to be integrated because i
Publicado em: 2000
-
31. Estrategias numericas para solução de modelos de não-equilibrio para absorção gasosa com reações quimicas complexas (regime estacionario e dinamico)
Gas absorption with chemical reactions is a very common industrial separation processo Until now the traditional equilibrium stage model have been the main tools to the design and unsteady state simulations of the gas-liquid contact equipment. The nonequilibrium model based on mass transfers fundamentais presents a more realistic description of the gas-liqui
Publicado em: 2000
-
32. Restrições funcionais de desigualdade no FPO Newton tratadas pelo metodo da continuação
One of the best algorithms to solve the Optimal Power Flow (OPF) problem is Newton s method applied to calculate the stationary point of a quadratic approximation to the Lagrangian function, which represents the Kunh- Tucker s first order conditions. Equality constraints are included through Lagrange multipliers, while inequality constraints on variables are
Publicado em: 1995
-
33. Dispositivos optoeletronicos para o infravermelho termal
The IV-VI materiais semiconducting devices are important due to their several applications in the thermal infrared spectral region (5 mm £ l £ 14 mm). Radiation detectors as well as semiconductor lasers made out with those compounds have several uses, ranging from satellite s attitude control to high resolution spectroscopy. Among the important materiais o
Publicado em: 1994
-
34. O metodo dual-Newton aplicado ao fluxo de carga otimo
An optimal power flow solution method is proposed in this work. The presented method has been developed from an association of an Augumented Lagrangian function with the original problem. The solution of the problem is searched through Newton s method for equalitv constraints and through an updating of dual variables and penalties related to the inequalitv c
Publicado em: 1990
-
35. STUDIES OF THE HARDINESS OF PLANTS: A MODIFICATION OF THE NEWTON PRESSURE METHOD FOR SMALL SAMPLES1
-
36. Two-dimensional distributions of activation enthalpy and entropy from kinetics by the maximum entropy method.
The maximum entropy method (MEM) is used to numerically invert the kinetics of ligand rebinding at low temperatures to obtain the underlying two-dimensional distribution of activation enthalpies and entropies, g(H,S). A global analysis of the rebinding of carbon monoxide (CO) to myoglobin (Mb), monitored in the Soret band at temperatures from 60 to 150 K, is