Thermoelectromechanical Response of a Piezoelectric Strip with Two Parallel Cracks of Different Lengths

The thermoelectromechanical fracture of a piezoelectric material strip with two parallel cracks of different lengths under electric and thermal loadings is considered. The crack faces are supposed to be insulated thermally and electrically. Fourier transform techniques are used to reduce the mixed b...

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Veröffentlicht in:	Nihon Kikai Gakkai ronbunshū. A 2008/08/25, Vol.74(744), pp.1134-1141
Hauptverfasser:	UEDA, Sei, ISHII, Akito, KONDO, Hironori, IKAWA, Ken
Format:	Artikel
Sprache:	jpn
Schlagworte:	Elasticity Fracture Mechanics Integral Transform Piezoelectric Material Stress Intensity Factor Thermal Stress Two Parallel Cracks
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container_title	Nihon Kikai Gakkai ronbunshū. A
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creator	UEDA, Sei ISHII, Akito KONDO, Hironori IKAWA, Ken
description	The thermoelectromechanical fracture of a piezoelectric material strip with two parallel cracks of different lengths under electric and thermal loadings is considered. The crack faces are supposed to be insulated thermally and electrically. Fourier transform techniques are used to reduce the mixed boundary value problems to two systems of singular integral equations. The singular integral equations are solved by using the Gauss-Jacobi integration formula. Numerical calculations are carried out, and detailed results are presented to illustrate the influence of the parameters of indicating the crack lengths, the crack location and the crack spacing on the stress and electric displacement intensity factors. The results for the temperature and thermal stress distributions are also included. From the numerical results, we can find that the normalized intensity factors are under the great influence of the geometric parameters. Especially, the interaction between two different length cracks is complicated.
doi_str_mv	10.1299/kikaia.74.1134
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The crack faces are supposed to be insulated thermally and electrically. Fourier transform techniques are used to reduce the mixed boundary value problems to two systems of singular integral equations. The singular integral equations are solved by using the Gauss-Jacobi integration formula. Numerical calculations are carried out, and detailed results are presented to illustrate the influence of the parameters of indicating the crack lengths, the crack location and the crack spacing on the stress and electric displacement intensity factors. The results for the temperature and thermal stress distributions are also included. From the numerical results, we can find that the normalized intensity factors are under the great influence of the geometric parameters. 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subjects	Elasticity Fracture Mechanics Integral Transform Piezoelectric Material Stress Intensity Factor Thermal Stress Two Parallel Cracks
title	Thermoelectromechanical Response of a Piezoelectric Strip with Two Parallel Cracks of Different Lengths
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