Dynamic Stability of Functionally Graded Beams with Piezoelectric Layers Located on a Continuous Elastic Foundation

Journal of Solid Mechanics

مقاله 6، دوره 1، شماره 2، شهریور 2009، صفحه 130-136   

نوع مقاله: Research Paper

نویسندگان

N Omidi^{* 1}؛ M Karami Khorramabadi²؛ A Niknejad³

¹Department of Mathematics, Islamic Azad University, Khorramabad Branch

²Department of Mechanical Engineering, Islamic Azad University, Khorramabad Branch

³Faculty of Engineering, Payame Noor University (PNU), Yazd Branch

چکیده

This paper studies dynamic stability of functionally graded beams with piezoelectric layers subjected to periodic axial compressive load that is simply supported at both ends lies on a continuous elastic foundation. The Young’s modulus of beam is assumed to be graded continuously across the beam thickness. Applying the Hamilton’s principle, the governing dynamic equation is established. The effects of the constituent volume fractions, the influences of applied voltage, foundation coefficient and piezoelectric thickness on the unstable regions are presented.

کلیدواژه‌ها

Dynamic stability؛ Functionally graded beam؛ Elastic foundation؛ Piezoelectric layer

مراجع

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