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51.
The analytical solution is obtained for the vibrations and dissipative heating of a hollow piezoceramic sphere polarized across the thickness, with thermal depolarization taken into account. The sphere is subjected to a quasistatic potential difference varying harmonically with time. The inside surface is heat-insulated and the outside surface is involved in convective heat exchange with the environment. A numerical analysis is made and the depolarization conditions and the effect of the depolarized region on the stress–strain state and heating temperature are analyzed. 相似文献
52.
I. F. Kirichok 《International Applied Mechanics》2009,45(2):215-222
The bending vibration and dissipative heating of a viscoelastic isotropic ring plate with piezoceramic actuators under electromechanical
loading and shear deformation are studied by solving a coupled problem. The temperature dependence of the complex characteristics
of the passive and piezoactive materials is taken into account. The nonlinear problem of thermoviscoelasticity is solved by
time stepping with discrete orthogonalization used at each iteration to integrate the equations of elasticity and using an
explicit finite-difference scheme to solve the heat-conduction equation with a nonlinear heat source. The effect of shear
deformation, fixation conditions for the plate, the geometry of the piezoactuators, and the dissipative-heating temperature
on the active damping of the forced vibration of a circular plate subject to uniform transverse monoharmonic compression is
studied
Translated from Prikladnaya Mekhanika, Vol. 45, No. 2, pp. 124–132, February 2009. 相似文献
53.
Kirichok I. F. Mikhailenko V. V. Davidchuk S. P. 《International Applied Mechanics》2002,38(9):1125-1130
The model problem on the forced longitudinal vibrations of a physically nonlinear viscoelastic rod is solved. An assessment is made of how well the single-frequency mode is maintained during the resonance vibrations of the rod. 相似文献
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