![]() Based on the Moore-Gibson-Thompson (MGT) model of non-Fourier-heat-conduction and thermal field effect, the equation governing the vibration of the thermoelastic microbeam was derived. The microbeam is described as an Euler-Bernoulli beam as it was heated by a very short laser pulse. In the current paper, a modified model of a microbeam resting on a viscous Pasternak foundation under the influence of axial tension will be presented. Foundations are also essential in maintaining microstructural systems during oscillations. There exists the specific radius ratio and thickness ratio to make the clamped-clamped microplate achieve the maximum deflection.ĭue to the wide variety of applications in many fields of science and engineering, the subject of foundations is considered highly attractive to many investigators. In addition, it is found that the increase of the thickness or radius of the upper elastic layer makes the buckling load increase while the deflection increase firstly and then decrease. The general theory is more effective in reflecting the size effects. Results reveal that the general theory predicts smaller bending deflection and axial displacement while larger buckling load than that of the reduced theories. The ability of the general theory and the reduced theories in describing the bending and buckling response of the partially covered laminated microplate is subsequently compared. By ignoring the deviatoric part of the strain gradients ηijk′(2)\documentclass, the general theory is simplified as the modified couple stress theory or the modified strain gradient elasticity theory, respectively. The general theory includes all strain gradients while the modified strain gradient elasticity theory and the modified couple stress theory only contain part of strain gradients. In this paper, we derive the theoretical relations among the modified strain gradient elasticity theory, the modified couple stress theory and the general strain gradient elasticity theory, and clarify the degradation relation. The strain gradient elasticity theory is proposed to explain the size dependency. The bending and buckling of the microcomponents show size dependency. Finally, more computational outcomes are presented to study the properties of different temperature factors including in the MGT thermoelastic model. ![]() In addition, the results that were found were compared with previous literature in order to validate the derived model. ![]() These effects include damping constants, laser pulses, and the stiffness of viscoelastic and elastic foundations. The influences of the operative parameters on the thermal deflection, axial thermal stress, displacement fields, and temperature change are presented. This methodology uses the Laplace transform as well as an approximate computational method for inverse transformations. ![]() A semi-analytical strategy is described to examine the properties of the studied field variables. In addition, the Moore–Gibson–Thompson (MGT) non-Fourier thermoelastic theory was used to attempt to explain the thermal variables of the system, and the equations regulating the vibration of thermo-elastic microbeams were then constructed. The Euler-Bernoulli beam model was used for this objective, and a very short laser pulse heated the medium. In this paper, the framework of a microscale beam is presented it was exposed to harmonically fluctuating heat and rested on a visco-Pasternak base under the impact of axial stress. It is necessary to determine the thermal performance of a structure to examine the thermoelastic properties that are caused by a heat source that is generated by a laser pulse. Due to the intricacy of this topic, the thermal study of microstructures on triple-parameter foundations subjected to ultrafast laser pulses has not received much attention. ![]()
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