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Vibrations of a composite beam under thermal and mechanical loadings

机译：热电和机械载荷下复合梁的振动

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摘要

Dynamics of a composite beam subjected to thermal and mechanical loadings is presented in the paper. The extended Timoshenko beam model takes into account shear and inertia of the cross-section and nonlinear longitudinal displacement caused by mechanical and thermal loadings. It has been shown that thermal and mechanical fields are fully coupled and the heat pulse may change the transient dynamics of the system. For the case of elevated temperature and a steady state problem the model is reduced to nonlinear ordinary differential equations of motion. It has been shown that the elevated ambient temperature may drastically change its response.
机译：本文提出了经受热和机械载荷的复合梁的动态。 扩展TIMOSHENKO光束模型考虑了由机械和热载荷引起的横截面和非线性纵向位移的剪切和惯性。 已经表明，热和机械场完全耦合，热脉冲可以改变系统的瞬态动力学。 对于温度升高的情况和稳态问题，模型降低到运动的非线性常微分方程。 已经表明，升高的环境温度可能会急剧地改变其响应。

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