Affiliations: [a] State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, China | [b] School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, Sydney, NSW, Australia
Correspondence:
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Corresponding author: Shijie Zheng, State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu 210016, China. E-mail:sjzheng@nuaa.edu.cn
Abstract: The present paper derives a 3-D finite element
formulation and an iterative algorithm for multiphysics analysis of coupled
anomalous photovoltaic, photo-thermal and pyroelectric effects in PbLaZrTi
(PLZT) ceramics. The distinction in the computation aspects of electrical
potential, electrical field strength and electrical charge for 0-1 and 0-3
polarized PLZT wafers are discussed thoroughly. The element performance is
improved by using an assumed natural strain approach and an enhanced assumed
strain method. The transverse displacements of a bimorph 0-1 polarized PLZT
actuator were predicted using the present finite element formulation and
then verified with the existing analytical solution and experimental
results. The static analysis of a cantilevered beam bonded with a 0-1 or
0-3 polarized PLZT actuators was also presented and compared with the
theoretical solutions. The numerical simulations demonstrate that the
present formulations and algorithm possess superior performance.
