Control of Complicated Stress Oscillations in FGPM Thin Plates
Control of Complicated Stress Oscillations in FGPM Thin Plates
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DOI：
10.1016/j.piutam.2017.03.027
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
F. Ashida;T. Morimoto;H. Ozaki
中科院分区：
文献类型：
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作者：
F. Ashida;T. Morimoto;H. Ozaki
获得了受到冲击压力的功能梯度压电材料薄板中的一维电弹动力学问题的解析解。在薄板两个表面均不带电荷的情况下，当机械阻抗与空间变量无关时，应力振荡是周期性的；而当机械阻抗依赖于空间变量时，应力振荡则变得复杂。在薄板两个表面之间的电压为零的情况下，无论阻抗与空间变量无关还是依赖于空间变量，应力振荡都很复杂。发现通过施加由解析解确定的特定电压可以完全抑制复杂的应力振荡。
Analytical solutions to one-dimensional electro-elastodynamic problems in functionally graded piezoelectric material thin plates subjected to impact pressure are obtained. In the case where both surfaces of the thin plate are free of electric charge, the stress oscillation is periodic when the mechanical impedance is independent of the space-variable, whereas it is complicated when the impedance depends on the space-variable. In the case where the voltage between both surfaces of the thin plate is zero, the stress oscillation is complicated whether the impedance is independent of or dependent on the space-variable. The complicated stress oscillations are found to be suppressed completely by applying specific voltages determined from the analytical solution.