THERMOMECHANICS OF INELASTIC THIN-WALLED STRUCTURAL MEMBERS WITH PIEZOELECTRIC SENSORS AND ACTUATORS UNDER HARMONIC LOADING (REVIEW)

摘要

Models, combined numerical-analytical methods, and results related to study of the forced resonance vibrations and self-heating of thin-walled inelastic structural members with piezoelectric sensors and actuators under monoharmonic mechanical and electric loading are presented. The thermomechanical behavior of passive and piezoactive materials is described using the concept of complex characteristics that are assumed to depend on temperature and invariants of the strain tensor. The classical and refined thermomechanical theories are used to model the vibrations and self-heating of thin-walled structural members with sensors and actuators. Nonlinear coupled thermoelastic problems for thin-walled structural members are solved by iteration and numerical methods. The thermal failure of structural members is considered. Methods for determining the critical electrical and mechanical monoharmonic loads and methods of postcritical analysis are described. The effect of various factors on the effectiveness of active damping of the resonance vibrations of inelastic thin-walled structural members by piezoelectric sensors and actuators is studied