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Title: Control of transient thermal stress in a piezo-composite disk

Authors: Fumihiro Ashida, Sei-ichiro Sakata, Youhei Sugimoto

Addresses: Department of Electronic and Control Systems Engineering, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, Japan. ' Department of Electronic and Control Systems Engineering, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, Japan. ' Design and Engineering Department #1, Mechanical Design Section, Tamron Co., Ltd., 1385 Hasunuma, Minuma-ku, Saitama-city, Saitama 337-8556, Japan

Abstract: This paper deals with the control of a transient thermal stress in a composite disk through piezoelectric actuation. The disk consists of a transversely isotropic structural layer and a piezoceramic layer with concentrically arranged electrodes. When the free surface of the structural layer is exposed to a transient heating temperature distribution, two thermoelastic problems of minimising the maximum transient thermal stress in the structural layer and controlling it within the allowable limit are analysed. Voltages applied to the electrodes are determined by solving linear programming problems so that the stress constraints imposed on the piezoceramic layer are satisfied. Finally, obtained numerical results are shown in figures.

Keywords: transient thermoelasticity; stress control; piezoelectric actuation; two-layer composite disks; analytical solution; linear programming problem; piezocomposites; thermal stress; piezoceramics.

DOI: 10.1504/IJTAMM.2011.041171

International Journal of Theoretical and Applied Multiscale Mechanics, 2011 Vol.2 No.1, pp.19 - 37

Available online: 11 Jul 2011 *

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