Response of thermoviscoelastic microbeams affected by the heating of laser pulse under thermal and magnetic fields
Ahmed E. Abouelregal, Hijaz Ahmad
Abstract
Abstract In the current study, we presented a new thermoviscoelastic Kelvin-Voigt model to describe the behavior of microbeams taking into account the influence of the temperature change and applied magnetic field. The non-Fourier heat conduction with the interaction of a permanent magnet field is taken into consideration in our modeling. Based on the Euler-Bernoulli beam theory, Maxwell’s equations, and the generalized thermoelasticity with dual-phase lags, the system of governing equations of the model are derived. The microbeam is affected by femtosecond laser heating. A numerical technique based on the Laplace transform method is exploited to obtain the solution to the problem. The effects of the boundary, viscosity, laser intensity, and magnitude of the magnetic field on microbeam are examined in several cases in detail. The results showed that the effect of coupling significantly improves the thermal wave and delays the stress wave duration.