Mahapatra, D.R. and Melnik, R.V.N.
in Particle and Continuum Aspects of Mesomechanics (Mesomechanics-2007, May 13-17, 2007, France), Eds. G.C. Sih, M. Nait-Abdelaziz, T. Vu-Khanh, ISBN 13: 978-1-84704-025-1, pp. 163--170, ISTE, 2007
A mesoscopic model to analyze various effects of electroactive and flow-related properties of piezoelectric copolymer-ceramic composite thin film is presented in this paper. A three-phase composite with piezoelectric particulate phase, electroactive polymer phase and graft polymer-matrix phase is considered. The proposed homogenized constitutive model takes into account the local transport of cations in polymer, electrostriction and anhysteretic polarization. The mesoscopic dispersion of the copolymer chains is included in the model. Finite element simulation is carried out by considering a P(VDF-TrFE0-PZT-Araldite thin film. Numerical simulations reveal diagonal-shear-band-like patterns with small scale flow-induced regions.
Keywords: piezoelectrics; polymers; mesoscopic; composites; thin films; electrostriction