The theory of generalized thermoelasticity, based on the Lord‐Shulman theory (LS) with one relaxation time and the Green‐Naghdi theory (GN) (of type II) without energy dissipation, as well as the classical dynamical coupled theory (CD), is used to study the electromagneto‐thermoelastic interactions in a semi‐infinite perfectly conducting solid subjected to a thermal shock on its surface. The entire elastic medium is rotating with a uniform angular velocity. There acts an initial magnetic field parallel to the plane boundary of the half‐space. The medium deformed because of thermal shock, the rotation and due to the application of the magnetic field. The normal mode analysis is used to obtain the exact expressions for the considered variables. The distributions of the variables considered are represented graphically for two different cases. From the distributions, the wave type heat propagation in the medium can be found. This indicates that the generalized heat conduction mechanism is completely different in essence from the classic Fourier’s law. Comparisons are made with the results predicted by the three theories in the presence and absence of rotation and a magnetic field.
The results of the theoretical analysis of the dynamic effects in the optically excited cantilevers were given. Theoretical model for dynamic elastic bending for two-layer cantilevers was derived including electronic and thermal elastic deformation effects which have the main influence on the dynamics of the cantilevers. The influence of the carrier transport characteristics (the carrier diffusion coefficient, the lifetime of photogenerated carriers, and the carrier recombination velocities) to the elastic vibrations of cantilevers was analyzed. Theoretical model was verified by comparing with the experimental results. The results of these investigations are important for sensors, actuators, and resonators based on the cantilevers.
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