Piezoelectric Plates
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Ensaio não destrutivo em revestimento cerâmico utilizando um protótipo para detecção de patologia
RESUMO No setor da construção civil há um crescente investimento na manutenção e reparo das construções, como por exemplo, as patologias encontradas nos pisos com revestimento cerâmico. Dentre as patologias mais comuns se pode destacar o assentamento inadequado das placas cerâmicas, que são caracterizadas pela perda de aderência de algumas placas
Matéria (Rio J.). Publicado em: 25/11/2019
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2. Hygro-thermo-mechanical bending of FG piezoelectric plates using quasi-3D shear and normal deformations theory
Abstract A simple quasi-3D sinusoidal shear and normal deformations theory for the hygro-thermo-mechanical bending of functionally graded piezoelectric (FGP) plate is developed under simply-supported edge conditions. The governing equations are deduced based on the principle of virtual work. The exact solutions for FGP plate are obtained. The current study i
Lat. Am. j. solids struct.. Publicado em: 15/08/2019
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3. Optimal Placement of Piezoelectric Macro Fiber Composite Patches on Composite Plates for Vibration Suppression
AbstractThis work presents a new methodology for the parametric optimization of piezoelectric actuators installed in laminated composite structures, with the objective of controlling structural vibrations. Problem formulation is the optimum location of a Macro Fiber Composite (MFC) actuator patch by means the maximization of the controllability index. The co
Lat. Am. j. solids struct.. Publicado em: 2015-05
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4. Vibration reduction of composite plates by piezoelectric patches using a modified artificial bee colony algorithm
In Current paper, power consumption and vertical displacement optimization of composite plates subject to a step load are carried out by piezoelectric patches using the modified multi-objective Elitist-Artificial Bee Colony (E-ABC) algorithm. The motivation behind this concept is to well balance the exploration and exploitation capability for attaining bette
Lat. Am. j. solids struct.. Publicado em: 2014
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5. A bending element for isotropic, multilayered and piezoelectric plates
In this paper, a new 12-node triangular element is developed for the analysis of composite plates. Moreover, the stress-strain relations of laminated bending plates, along with the characteristics of composite and piezoelectric materials have also been investigated. Following this, a finite element formulation for smart composite bending plates is proposed.
Lat. Am. j. solids struct.. Publicado em: 2013-03
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6. Projeto de transdutores baseados em placas piezelétricas através do método de otimização topológica. / Design of transducers based on piezoelectric plates by using the topology optimization method.
Sensores e atuadores baseados em placas piezelétricas têm apresentado uma crescente demanda no campo denominado Estruturas Inteligentes, incluindo o desenvolvimento de atuadores para aplicações de resfriamento e bombeamento de fluidos, transdutores para novos coletores de energia, e diversas outras aplicações que apresentem requisitos quasi -estáticos
Publicado em: 2011
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7. The use of piezoelectric stress stiffening to enhance buckling of laminated plates
A technique for enhancement of buckling loads of composite plates is proposed. The technique relies on using stress stiffening to create a non-zero tensile force acting along the plate plane which ultimately permits the application of higher external compressive forces that lead to traditional buckling instabilities. The idea is to completely restrain the pl
Latin American Journal of Solids and Structures. Publicado em: 2010
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8. Structural health monitoring of composite materials subjected to impacts using the electromechanical impedance technique / Monitoramento de integridade estrutural de materiais compostos sujeitos a impactos empregando a técnica da impedância eletromecânica
Nowadays, composite materials have increasingly replaced traditional materials in applications that require improved performance, safety, economy and durability. Nonetheless, such materials exhibit complex damage mechanisms that cannot be easily detected in early stages. Failures can occur during manufacturing, operation or even in the course of maintenance.
Publicado em: 2008
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9. Modelagem por elementos finitos de placas compostas dotadas de sensores e atuadores piezoelÃtricos : implementaÃÃo computacional e avaliaÃÃo numÃrica / Finite element modeling of composite plates incorporating piezoelectric sensors and actuators: implementation and numerical assessment
This Dissertation presents a methodology based on the Finite Element method for the modeling of laminated composite beams and plates containing piezoelectric sensors and actuators. The fundamental concepts and the theoretical developments are presented, followed by a number of numerical simulations performed in MATLABÂ environment. The finite element used i
Publicado em: 2006
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10. Modelagem por elementos finitos de placas compostas dotadas de sensores e atuadores piezoelétricos : implementação computacional e avaliação numérica / Finite element modeling of composite plates incorporating piezoelectric sensors and actuators: implementation and numerical assessment
Esta dissertação apresenta uma metodologia baseada no Método dos Elementos Finitos (MEF) para a modelagem de estruturas compostas laminadas do tipo viga e placa dotadas de sensores e atuadores piezoelétricos. Os conceitos fundamentais e o desenvolvimento teórico são apresentados, seguidos de simulações numéricas realizadas em ambiente MATLAB para a
Publicado em: 2006
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11. Finite element modeling of a plate with localized piezoelectric sensors and actuators
This paper presents the numerical modeling of a plate structure containing bonded piezoelectric material. Hamilton's principle is employed to derive the finite element equations using the mechanical energy of the structure and the electrical energy of the piezoelectric material. Then, a numerical model is developed based on Kirchhoff's plate theory. A comput
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2004-06
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12. UM POLARÍMETRO DE BAIXO CUSTO / A POLARIMETER OF LOW COST
A new polarimeter model, based on time-varying birefringence caused by piezoelectric-controlled fiber- squeezing plates, is presented and constructed. The device is based on time division of the light signal and, in comparison with other polarimeters of its kind, features many advantages, like low cost and simplicity. The results given by the new polarimeter
Publicado em: 2003