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Effect of Piezoelectric Layer on Beam Parameters using Zigzag Theory

, and . AMAE International Journal of Manufacturing and Material Science, 3 (1): 7 (May 2013)

Abstract

An efficient higher order theory is presented for static analysis of multilayered composite beams with piezoelectric layers embedded or bonded to the surface, under static electromechanical load. In this theory, the in-plane displacement field is taken as a combination of a layer-wise linear variation and a cubic variation across the thickness. Transverse normal strains are neglected. The electric field is also approximated as piecewise linear across the sub layers. The displacement field is expressed in terms of only three primary displacement variables excluding electric potential variables by enforcing the conditions of zero transverse shear stress at top and bottom of the beam and its continuity at layer interfaces under general electromechanical loading. The effect of thickness of the piezo-layer is observed for various loading conditions. Also, the effect of beam lay-up on various parameters is studied.

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