Thermoelastic vibrations of microbeam resonator under pulsed laser heating

Abstract

ABSTRACT In Ultra-short pulsed laser heat problems, two dominant effects are considered, the non-Fourier heat conduction and the coupling effect between temperature and strain rate. In the present study, the thermoelastic vibrations of the Euler-Bernoulli microbeam resonator under pulsed laser heating have been investigated by considering the effect of the length parameter based on the modified couple stress theory. The equation of motion of the system is extracted using Hamilton’s principle and the equations of thermal and vibration coupling are solved by combining the two methods of finite sine Fourier transform and Laplace transform. The obtained results have been compared with the results of continuous classical theory. Also, increasing the length scale in the modified couple stress theory reduces the temperature and increases the frequency of heatwave oscillations distributed in the resonator.