Classical Solutions
Mostrando 1-12 de 146 artigos, teses e dissertações.
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1. Oscilador Harmônico Duplo difuso
Resumo A descrição do comportamento de um sistema difuso, linear e não-linear, pode ser tratada através da equação de Fokker-Planck. Esta equação tem despertado grande interesse de pesquisadores por sua boa adaptação a diferentes sistemas, tanto clássicos como quânticos. Neste trabalho, utilizamos a equação de Fokker-Planck para encontrar as pr
Rev. Bras. Ensino Fís.. Publicado em: 25/11/2019
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2. Optimized design of RC deep beams based on performance metrics applied to strut and tie model and in-plane stress conditions
Abstract Deep beams do not behave according to classical beam theory. The nonlinearity of strain distribution within these elements requires application of strut and tie models (STM) or other alternatives to evaluate the complex stress field. Although the design of these elements is a common task for structural engineers, limited research is found on assessi
Lat. Am. j. solids struct.. Publicado em: 22/08/2019
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3. Reduced-order strategy for meshless solution of plate bending problems with the generalized finite difference method
Abstract This paper presents some recent advances on the numerical solution of the classical Germain-Lagrange equation for plate bending of thin elastic plates. A meshless strategy using the Generalized Finite Difference Method (GFDM) is proposed upon substitution of the original fourth-order differential equation by a system composed of two second-order par
Lat. Am. j. solids struct.. Publicado em: 04/02/2019
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4. Implementation Analysis of a Washout Filter on a Robotic Flight Simulator - a Case Study
ABSTRACT This paper presents a detailed analysis about the implementation of a washout filter on the SIVOR (Simulador de Voo Robótico - Robotic Flight Simulator) project. The main objective of this project is to develop, on an anthropomorphic robot, a flight simulator which can be used as an Engineering Development System (EDS) and a pilot training platform
J. Aerosp. Technol. Manag.. Publicado em: 14/01/2019
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5. Single variable new first-order shear deformation theory for isotropic plates
Abstract This paper presents a single variable new first-order shear deformation plate theory with only one fourth-order partial governing differential equation. It may be noted that, first-order shear deformation plate theory of Mindlin has three coupled partial governing differential equations involving three unknown functions. Even a recently developed ne
Lat. Am. j. solids struct.. Publicado em: 11/10/2018
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6. Simple but accurate periodic solutions for the nonlinear pendulum equation
Abstract Despite its elementary structure, the simple pendulum oscillations are described by a nonlinear differential equation whose exact solution for the angular displacement from vertical as a function of time cannot be expressed in terms of an elementary function, so either a numerical treatment or some analytical approximation is ultimately demanded. Su
Rev. Bras. Ensino Fís.. Publicado em: 21/09/2018
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7. Local buckling and post-critical behavior of thin-walled composite channel section columns
Abstract This work presents a study of the behavior, performance and failure of thin-walled composite channel section columns. The study is carried-out using nonlinear finite element models of laminated columns, including geometric imperfections and material failure, as well as approximate analytical solutions based on the Classical Lamination Theory. The ac
Lat. Am. j. solids struct.. Publicado em: 19/07/2018
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8. Power Allocation in PON-OCDMA with Improved Chaos Particle Swarm Optimization
Abstract In this work, it is investigated an improved chaos particle swarm optimization (IC-PSO) scheme to refine the quality of the algorithm solutions regarding to solve the optimal power allocation in next generation passive optical networks (NG-PON)s. The proposed IC-PSO scheme utilizes the Beta distribution instead of uniform distribution of the traditi
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2018-06
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9. An interface element for numerical analysis of flat plate/shell elements with deformable connection
Abstract The use of numerical methods such as the finite elements method for solving structural analysis problems is becoming ever more efficient. An interface element capable of associating flat plate/shell element in three different combinations has been developed. In a structural analysis, when only the flat plate/shell’s finite elements are used in th
Lat. Am. j. solids struct.. Publicado em: 26/04/2018
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10. MATHEMATICAL MODELLING AND SOLUTION APPROACHES FOR PRODUCTION PLANNING IN A CHEMICAL INDUSTRY
ABSTRACT This paper addresses a lot sizing problem in a Brazilian chemical industry where a product can be produced by more than one process, which can use different parallel machines and may even consume a wide range of raw materials. Moreover, most of the products are liquids and the inventories must be kept in a restricted number of storage tanks with a l
Pesqui. Oper.. Publicado em: 2017-08
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11. QUALITY ANALYSIS FOR THE VRP SOLUTIONS USING COMPUTER VISION TECHNIQUES
ABSTRACT The Vehicle Routing Problem (VRP) is a classical problem, and when the number of customers is very large, the task of finding the optimal solution can be extremely complex. It is still necessary to find an effective way to evaluate the quality of solutions when there is no known optimal solution. This work presents a suggestion to analyze the qualit
Pesqui. Oper.. Publicado em: 2017-08
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12. Behavioral Study of Finite Beam Resting on Elastic Foundation and Subjected to Travelling Distributed Masses
Abstract The classical problem of the response characteristics of uniform structural member resting on elastic subgrade and subjected to uniform partially distributed load is studied in this work. The closed form solutions of the governing fourth order partial differential equations with variable coefficients are presented using an elegant analytical techniq
Lat. Am. j. solids struct.. Publicado em: 2017-02