Active control for ratios of strains in functionally graded piezoelectric composites

The present paper concentrates on the active control of the static bending and dynamic response of a functionally graded piezoelectric material (FGPM) plate subjected to thermo-electro-mechanical loads. Using the first-order shear deformation theory and Hamilton’s principle, the equation of motion for the FGPM plate is deduced. Based on the smart properties of piezoelectric ceramic, the active control of the static bending and vibration of the FGPM plate is studied by the mechanical load feedback, velocity feedback and LQR control methods in thermal environment. The effects of load parameter, temperature, volume fraction index and feedback control gain on the static bending and dynamic response of the FGPM plate are examined in detail. The simulation results show that the present control method can largely improve both the static and dynamic stability of the FGPM plate.

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Vibroacoustic response and active control of a fluid-filled functionally graded piezoelectric material composite cylinder

Journal of Intelligent Material Systems and Structures ◽

10.1177/1045389x12439637 ◽

2012 ◽

Vol 23 (7) ◽

pp. 775-790 ◽

Cited By ~ 16

Author(s):

Seyyed M Hasheminejad ◽

Mahdi Alaei-Varnosfaderani

Keyword(s):

Piezoelectric Material ◽

Active Control ◽

Functionally Graded ◽

Composite Cylinder ◽

Functionally Graded Piezoelectric Material ◽

Functionally Graded Piezoelectric ◽

Material Composite ◽

Vibroacoustic Response

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Stress and active control analysis of functionally graded piezoelectric material cylinder and disk under electro-thermo-mechanical loading

Journal of Intelligent Material Systems and Structures ◽

10.1177/1045389x17721374 ◽

2017 ◽

Vol 29 (5) ◽

pp. 924-937 ◽

Cited By ~ 6

Author(s):

Mohammad Parhizkar Yaghoobi ◽

Iman Ghaffari ◽

Mehdi Ghannad

Keyword(s):

Piezoelectric Material ◽

Active Control ◽

Functionally Graded ◽

Control Factor ◽

Control Analysis ◽

Mechanical Behaviors ◽

Functionally Graded Piezoelectric Material ◽

Functionally Graded Piezoelectric ◽

And Control ◽

Insight Into

The purpose of this article is to investigate the active control behavior and stress analysis of functionally graded piezoelectric material circular hollow cylinder and disk under electro-thermo-mechanical loading. Also, this research presents a new compact formula for analysis of cylinder and disk that could be useful for engineers and designers to get insight into behavioral change of structures by geometry. The exact solutions of the functionally graded piezoelectric material structures could be found based on Lame’s solution. For a radially polarized cylinder and disk with continuously graded properties, it is assumed that material properties are varied by a power-law function, and inner surface and outer surface of these structures are considered to be sensor and actuator, respectively. Based on the exact solution, extensive numerical analyses are carried out to provide an insight into the effect of non-homogeneity constant and control factor on electro-thermo-mechanical behaviors and active control analysis of structures. The results show how the electro-thermo-mechanical behaviors change by non-homogeneity and control factor.

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