This work highlights the problems concerned with an initially stressed viscoelastic microbeam with small-scale thickness which is subjected to an ultra-fast laser heating and exposed to a sinusoidal varying heat. The analytical solutions for the deflection and temperature are obtained in terms of Laplace transform method. To indicate the effects of viscous damping coefficient, the time width of thermal vibration, the initial stress and the laser pulse duration parameters on the vibration characteristics of Euler–Bernoulli microbeams have been considered, and finally, numerical results are displayed. The results in here basically indicated that the viscoelasticity and initial stress effect of materials can be gradually applied to the design of the micro-electromechanical systems.

中文翻译：

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超高强度激光诱导的初始应力粘弹性微束的动力学特性

这项工作突出了与小尺寸厚度的初始应力粘弹性微束有关的问题，该束受到超快激光加热并受到正弦变化热的影响。根据拉普拉斯变换法获得了挠度和温度的解析解。为了说明粘性阻尼系数，热振动的时间宽度，初始应力和激光脉冲持续时间参数对Euler–Bernoulli微束振动特性的影响，最后显示了数值结果。此处的结果基本上表明，材料的粘弹性和初始应力效应可以逐步应用于微机电系统的设计。