Title: Pyroelectric and hygrothermal couplings effects on dynamic active control analysis of coupled thermopiezoelastic composite plate

Authors: Milad Rouzbehani

Addresses: Mechanical Engineering Department, A. Hashemi Rafsanjani Engineering Campus, Islamic Azad University of Central Tehran Branch, Tehran, Iran

Abstract: The main goal of this article is to examine the pyroelectric and hygrothermal couplings effects on dynamic active control analysis of coupled thermopiezoelastic composite plate. The dynamic deflection and stresses of coupled thermopiezoelasticity displayed to hot and humid environmental circumstances are obtained using a direct proportional feedback controller. The governing equations are determined utilising the Navier solution method. The results clearly show that by increasing moisture diffusion, the number of stresses and deflections are increased. Consequently, the induced temperature is increased by increasing humidity up to 25%. A change of 5% deflection rise and on average 4% increase of stresses is observed. Furthermore, if the increase of humidity goes to 75% the plate deflection grows by 9% and stresses increase by about 8%. Additionally, by applying appropriate control gain, the deflection damped 62% quicker which causes the heat generated in the plate controlled properly.

Keywords: coupled thermopiezoelasticity; hygrothermal environment; pyroelectric effect; sensor; actuator; Navier solution.

DOI: 10.1504/IJMPT.2023.127964

International Journal of Materials and Product Technology, 2023 Vol.66 No.1, pp.87 - 105

Received: 01 Nov 2021
Accepted: 11 May 2022
Published online: 22 Dec 2022 *