Three-dimensional (3D) constitutive equations of piezoelectric (PZ) plates and shells are considered for inverse linear and electrostrictive (quadratic) piezoeffects. Prestressed multilayer PZ shells reinforced with metal including the case of uneven thickness polarization are studied. Asymptotic and variational methods to solve the governing differential equations of PZ shells are considered. Concentrations of electrical and mechanical fields near structure imperfections and external local loading are investigated. The electrothermoviscoelastic heating of PZ shells is considered at harmonic excitation. From numerical analysis and the experimental data of energy dissipation and the temperature behavior of PZ shell the conditions of optimal transformation of electric energy into mechanical deformations are defined. Thus, the geometrical parameters and working frequencies are determined with due account of dielectric relaxation processes. The following nonlinear phenomena are studied: acoustoelectronic wave amplification; electron injection into metalized polar dielectric; resonance growth by 5–20 times of internal electrical field strength in the PZ shells and plates; and autothermostabilization of ferroelectric resonators. For a better understanding of R.D. Mindlin’s gradient theory of polarization in view of electron processes in thin metal-dielectric-metal structures, use was made of solid state physics interpretations as well as experimental data. High concentration of mechanical stresses and temperature and electrical fields near structure defects (first of all, near boundary between various materials) defines the main properties of polar dielectrics. An unknown domain of electrode rough surface influence was estimated, and as result an uneven polarization distribution was found. A theory of nonlinear autowave systems with energy dissipation was used in a physical model of the electrothermal fracture of dielectrics (contacting with metal electrodes), and as a result a nondestructive testing method to study the microstructure defect formation has been suggested.
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January 2007
Review Articles
Electroelasticity Relations and Fracture Mechanics of Piezoelectric Structures
V. M. Bogomol’nyi
V. M. Bogomol’nyi
Moscow State University of Service
, 141220, Glavnaya 99, Pushkinsky raion, Cherkizovo, Moscow region, Russia
Valentin M. Bogomol’nyi is a Professor of mechanical engineering at the Moscow State University of Service. His PhD Structural Mechanics from Moscow Institute of Mechanical Engineering (1974). A list of his publications contains above 90 items including five books (one in English). Bogomol’nyi’s research interests include mechanics of solids, piezoelectronics, physics, and technology of materials.
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V. M. Bogomol’nyi
Valentin M. Bogomol’nyi is a Professor of mechanical engineering at the Moscow State University of Service. His PhD Structural Mechanics from Moscow Institute of Mechanical Engineering (1974). A list of his publications contains above 90 items including five books (one in English). Bogomol’nyi’s research interests include mechanics of solids, piezoelectronics, physics, and technology of materials.
Moscow State University of Service
, 141220, Glavnaya 99, Pushkinsky raion, Cherkizovo, Moscow region, RussiaAppl. Mech. Rev. Jan 2007, 60(1): 21-36 (16 pages)
Published Online: January 1, 2007
Citation
Bogomol’nyi, V. M. (January 1, 2007). "Electroelasticity Relations and Fracture Mechanics of Piezoelectric Structures." ASME. Appl. Mech. Rev. January 2007; 60(1): 21–36. https://doi.org/10.1115/1.2375142
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