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Research Papers

A Comparison of Post-buckling Behavior for FGM Cylindrical Shells With Piezoelectric Fiber Reinforced Composite Actuators

[+] Author and Article Information
Hui-Shen Shen1

School of Ocean and Civil Engineering, and State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200030, People’s Republic of Chinahsshen@mail.sjtu.edu.cn

1

Corresponding author.

J. Eng. Mater. Technol 131(3), 031010 (May 29, 2009) (11 pages) doi:10.1115/1.3120408 History: Received October 24, 2008; Revised February 02, 2009; Published May 29, 2009

Compressive post-buckling under thermal environments and thermal post-buckling due to uniform temperature field or heat conduction are presented for a shear deformable functionally graded cylindrical shell with piezoelectric fiber reinforced composite (PFRC) actuators. The material properties of functionally graded materials (FGMs) are assumed to be graded in the thickness direction according to a simple power law distribution in terms of the volume fractions of the constituents, and the material properties of both FGM and PFRC layers are assumed to be temperature-dependent. The governing equations are based on a higher order shear deformation shell theory that includes thermopiezoelectric effects. The nonlinear prebuckling deformations and initial geometric imperfections of the shell are both taken into account. A singular perturbation technique is employed to determine buckling loads (temperature) and post-buckling equilibrium paths. The numerical illustrations concern the compressive and thermal post-buckling behavior of perfect and imperfect FGM cylindrical shells with fully covered PFRC actuators under different sets of thermal and electric loading conditions, from which results for monolithic piezoelectric actuators are obtained as comparators. The results reveal that, in the compressive buckling case, the control voltage only has a small effect on the post-buckling load-deflection curves of the shell with PFRC actuators, whereas in the thermal buckling case, the effect of control voltage is more pronounced for the shell with PFRC actuators, compared with the results of the same shell with monolithic piezoelectric actuators.

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Copyright © 2009 by American Society of Mechanical Engineers
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Figure 4

Comparisons of post-buckling behavior of (P/FGM/P) and (FGM/P) cylindrical shells with PFRC actuators: (a) load-shortening and (b) load-deflection

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Figure 5

Comparisons of thermal post-buckling load-deflection curves of (P/FGM/P) cylindrical shells with PFRC and monolithic piezoelectric actuators under heat conduction

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Figure 6

Effects of volume fraction index N on the thermal post-buckling load-deflection curves of (P/FGM/P) cylindrical shells with PFRC actuators under heat conduction

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Figure 7

Comparisons of thermal post-buckling load-deflection curves of (P/FGM/P) and (FGM/P) cylindrical shells with PFRC actuators under heat conduction

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Figure 3

Effects of volume fraction index N on the post-buckling behavior of (P/FGM/P) cylindrical shells with PFRC actuators: (a) load-shortening and (b) load-deflection

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Figure 2

Comparisons of post-buckling behavior of (P/FGM/P) cylindrical shells with PFRC and monolithic piezoelectric actuators: (a) load-shortening and (b) load-deflection

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Figure 1

Configurations of two types of FGM hybrid cylindrical shells: (a) geometry and coordinate system of an FGM hybrid cylindrical shell, (b) (P/FGM/P) shell panel, and (c) (FGM/P) shell panel

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