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首页> 外文期刊>Applied Mathematical Modelling >Finding the optimum polarization boundary line for enhancing the performance of clamped piezoelectric circular plates
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Finding the optimum polarization boundary line for enhancing the performance of clamped piezoelectric circular plates

机译：找到最佳极化边界线，用于提高夹紧压电圆形板性能

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摘要

The piezoelectric unimorph circular diaphragm is a valuable configuration in many applications of smart structures and smart martials. Piezoelectric energy harvesting, sensing and actuating in a pressure-load system are main applications of this configuration. Structural optimization could be used to improve the performance of this configuration. In this paper, a piezoelectric unimorph energy harvester is considered for capturing energy from pressure fluctuations of a system and converting it to electrical energy. This theoretical study includes comprehensive analytical modelling followed by a parametric study to optimize the polarization boundary of a clamped piezoelectric circular diaphragm. The results indicate that by considering the generated electric field along the diameter of the piezoelectric layer, the location of zero-strain points is found to be dependant on the radii of both the piezoelectric layer and substrate. Moreover, it is observed that these points are almost independent of the thicknesses of the layers and external pressure load. Changes of these parameters can only shift the amplitude of the generated electric field to higher or lower values. The results confirm that the derived closed-form equation for the electric field in Z direction along the diameter of the piezoelectric disc is worthwhile for further investigation in this field.
机译：压电单身圆形隔膜是一种有价值的结构，在许多智能结构和智能武术中的应用中。压电能量收集，传感和致动在压力负荷系统中是这种配置的主要应用。结构优化可用于提高该配置的性能。本文认为，用于捕获从系统的压力波动的能量并将其转换为电能的压电无规态能量收割机。该理论研究包括综合分析建模，然后是参数化研究，以优化夹紧压电圆形隔膜的偏振边界。结果表明，通过考虑沿压电层的直径的产生的电场，发现零应变点的位置取决于压电层和基板的半径。此外，观察到这些点几乎与层的厚度与外部压力负载无关。这些参数的变化只能将所产生的电场的幅度移至更高或更低的值。结果证实，沿着压电盘的直径的Z方向上的电场的推导闭合形式方程是值得进的该领域的进一步研究。

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