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Structural Engineering and Mechanics Volume 24, Number 4, November10 2006 , pages 395-410 DOI: https://doi.org/10.12989/sem.2006.24.4.395 |
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Wave propagation in laminated piezoelectric cylindrical shells in hydrothermal environment |
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K. Dong and X. Wang
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| Abstract | ||
| This paper reports the result of an investigation into wave propagation in orthotropic laminated piezoelectric cylindrical shells in hydrothermal environment. A dynamic model of laminated piezoelectric cylindrical shell is derived based on Cooper-Naghdi shell theory considering the effects of transverse shear and rotary inertia. The wave characteristics curves are obtained by solving an eigenvalue problem. The effects of layer numbers, thickness of piezoelectric layers, thermal loads and humid loads on the wave characteristics curves are discussed through numerical results. The solving method presented in the paper is validated by the solution of a classical elastic shell non-containing the effects of transverse shear and rotary inertia. The new features of the wave propagation in laminated piezoelectric cylindrical shells with various laminated material, layer numbers and thickness in hydrothermal environment and some meaningful and interesting results in this paper are helpful for the application and the design of the ultrasonic inspection techniques and structural health monitoring. | ||
| Key Words | ||
| laminated piezoelectric cylindrical shells; wave characteristics curves; transverse shear and rotary inertia; thermal/humid loads. | ||
| Address | ||
| Department of Engineering Mechanics, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200030, P. R. China | ||