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Saint-Venant’s Problem for Compound Piezoelectric Beams

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Abstract

The solution of the Saint-Venant’s Problem for a slender compound piezoelectric beam presented in this paper generalizes the recent solution by the authors and E. Harash (J. Appl. Mech. 11:1–10, 2007) for a homogeneous piezoelectric beam and the solution for a compound elastic beam developed by O. Rand and the first author (Analytical Methods in Anisotropic Elasticity with Symbolic Computational Tools, Birkhauser, Boston, 2005). Justification for this approximation emerges from the St. Venant’s Principle. The stress, strain and (electrical) displacement components (“solution hypothesis”) are presented as a set of initially assumed expressions involving twelve tip loading parameters, six unknown weight coefficients, and three pairs of torsion/bending functions of two variables. Each pair of functions satisfies the so-called coupled non-homogeneous Neumann problem (CNNP) in the cross-sectional domain. The work develops concepts of the torsion/bending functions, the torsional rigidity and piezoelectric shear center, the tip coupling matrix, for a compound piezoelectric beam. Examples of exact and approximate solutions for rectangular laminated beams made of transtropic materials are presented.

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Authors and Affiliations

  1. Department of Mathematics, University of Haifa, Mount Carmel, Haifa, 31905, Israel

    Vladimir Rovenski

  2. Faculty of Aerospace Engineering, Technion–I.I.T., Haifa, 32000, Israel

    Haim Abramovich

Authors
  1. Vladimir Rovenski
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  2. Haim Abramovich
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Correspondence to Vladimir Rovenski.

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Rovenski, V., Abramovich, H. Saint-Venant’s Problem for Compound Piezoelectric Beams. J Elasticity 96, 105–127 (2009). https://doi.org/10.1007/s10659-009-9201-9

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  • DOI: https://doi.org/10.1007/s10659-009-9201-9

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