首页> 外文期刊>Journal of thermal stresses >THE THERMOELASTIC WAVES INDUCED BY PULSED LASER AND VARYING HEAT OF INHOMOGENEOUS MICROSCALE BEAM RESONATORS
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THE THERMOELASTIC WAVES INDUCED BY PULSED LASER AND VARYING HEAT OF INHOMOGENEOUS MICROSCALE BEAM RESONATORS

机译:脉冲激光和不均匀的微束梁谐振器的热变化引起的热弹性波

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摘要

In this article, a solution to the problem of thermally induced vibration of an inhomogeneous beam is presented. A laser pulse with non-Gaussian temporal form is applied to the upper surface of a beam at the beginning of time; we used generalized thermoelasticity. An analytical technique based on the Laplace transform was used to calculate the vibration of deflection and temperature. The inverse of Laplace transforms are computed numerically using Fourier expansion techniques. We have studied the effects of phase lags, the inhomogencity parameter, the time of the laser-pulse, and the laser intensity parameters on lateral vibration, temperature, displacement, stress, and strain of the beam. The numerical results are given and presented graphically for dual phase lag theory of thermoelasticity.
机译:在本文中,提出了一种解决非均质梁热感应振动问题的方法。在时间开始时,将非高斯时间形式的激光脉冲施加到光束的上表面。我们使用广义的热弹性。使用基于拉普拉斯变换的分析技术来计算挠度和温度的振动。拉普拉斯变换的逆使用傅立叶展开技术进行数值计算。我们已经研究了相位滞后,不均匀性参数,激光脉冲的时间以及激光强度参数对光束的横向振动,温度,位移,应力和应变的影响。给出了数值结果,并以图形方式给出了热弹性双相滞后理论。

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