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• The study of a rotating viscoelastic thin microbeam. • Capturing the influences of viscoelastic behavior via a non-Fourier heat conduction model. • To incorporate the viscoelastic properties of the model in terms of the Kelvin-Voigt scheme. • To reduce the new viscoelastic microbeam model to the elastic beam theory. • The effect of the viscous damping coefficient on the microbeam structure. In this investigation, the system of equations governing the thermoelastic behavior of a rotating viscoelastic microbeam has been derived based on the non-Fourier heat conduction model. The viscoelastic properties of the material are incorporated in terms of the Kelvin-Voigt scheme. This considered microbeam is axially compressed and rotated at a uniform angular velocity in addition to exposing it to a femtosecond laser pulse heat source. The proposed model can be reduced to the thermoelastic beam theory when the viscous and rotation parameters are neglected. To obtain an analytical solution for the studied fields, the Laplace transform technique is applied. The effect of the viscous damping coefficient on the microbeam structure has been studied. Also, the effect of the axial load, laser pulse duration and angular velocity on the thermal and elastic waves of the rotating microbeam has been presented graphically and analyzed in detail. [ABSTRACT FROM AUTHOR]

In recent decades, microelectromechanical system (MEMS) technology has aroused great interest from researchers in the fields of science and technology, electromechanics, chemistry, and bioengineering. Rotary systems are also used in a variety of sectors, from a space station with a spinning wheel to a small turbine in smartphones. In this paper, the thermoviscoelastic interactions of rotating microbeams were investigated using the modified couple stress theory (MCST) to examine the size-dependent effect. Also, the governing equations were derived within the framework of the Lord and Shulman generalized thermoelastic theory and the Euler–Bernoulli beam model. In addition, the Kelvin–Voigt approach is used to calculate the properties of viscoelastic materials. By applying the proposed model, an axially compressed microbeam that rotates at a constant angular velocity and is exposed to a femtosecond laser pulsed heat source was studied To solve the equations of motion in the space domain, the well-known Laplace transform technique is utilized. The inverse Laplace transform is calculated numerically using a well-established and reliable approximation approach. The effect of the length scale parameter, laser pulse duration, and angular velocity on the heat and elastic waves of a rotating thin beam is explored and discussed. The effect of the viscous damping factor on different physical fields of the microbeam was also studied. • The thermoviscoelastic interactions of rotating microbeams based on the modified couple stress theory are studied. • The governing equations are derived based on generalized thermoelasticity and Euler–Bernoulli beam theories. • This microbeam is axially compressed and rotated at a consistent angular speed and subjected to a heat source. • The influence of the effective parameters on the thermal and mechanical waves was depicted and explored in depth. [ABSTRACT FROM AUTHOR]