Forced axisymmetric vibrations and self-heating of thermoviscoelastic cylindrical shells with piezoelectric actuators |
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Authors: | I F Kirichok T V Karnaukhova |
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Institution: | 1.S. P. Timoshenko Institute of Mechanics, National Academy of Sciences of Ukraine,Kyiv,Ukraine;2.National Technical University of Ukraine “KPI”,Kyiv,Ukraine |
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Abstract: | The coupled problem of the forced axisymmetric vibrations and self-heating of electrothermoviscoelastic cylindrical shells
with piezoceramic actuators under monoharmonic electromechanical loading is solved. The temperature dependence of the complex
characteristics of the passive and piezoactive materials is taken into account. The coupled nonlinear problem of electrothermoelasticity
is solved by using a time-marching method with discrete orthogonalization at each time step (to integrate the equations of
elasticity) and an explicit finite-difference method (to solve the heat-conduction equations). An analysis is made of the
effect of the boundary conditions at the shell ends, the dimensions of the piezoactuator, and the self-heating temperature
on the actuator voltage and the effectiveness of active damping of the forced vibrations of the shell under uniform transverse
monoharmonic pressure |
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Keywords: | |
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