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

This paper studies dynamic stability of homogeneous beams with piezoelectric layers subjected to periodic axial compressive load that is simply supported at both ends lies on a continuous elastic foundation. The displacement field of beam is assumed based on Bernoulli-Euler beam theory. Applying the Hamilton's principle, the governing dynamic equation is established. The influences of applied voltage, foundation coefficient and piezoelectric thickness on the unstable regions are presented. To investigate the accuracy of the present analysis, a compression study is carried out with a known data.

Authors:

• A. R. Nezamabadi
• M. Karami Khorramabadi

Keywords:

• Dynamic stability
• Homogeneous graded beam-Piezoelectric layer
• Harmonic balance method.

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