PZT Asymmetrical Shape Optimization in Active Vibration Reduction of Triangular Plates

IF 0.6 4区 物理与天体物理 Q4 ACOUSTICS
A. Brański, Romuald Kuras
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引用次数: 0

Abstract

The article presents the new 2D asymmetrical PZT (a-PZT) and its effectiveness in the active reduction of triangular plate vibrations. The isosceles right triangular plate with simply supported edges was chosen as the research object. To determine the a-PZT asymmetry and its distribution on the plate, a maximum bending moment criterion for the beam was used. First of all, this criterion points out exact center location of the a-PZT. It was at the point, at which the plate bending moment has reached its maximum value. Next, at this point, it was assumed that the piezoelectric consists of active fibers located radially from the center. Each fiber acted on the plate as a separate actuator. Next, at each direction, the actuator asymmetry was found mathematically by minimizing the amplitude of the vibrations. By connecting the outer edges of individual fibers, the 2D a-PZT was obtained. It was quantitatively confirmed that the effectiveness of the new a-PZT was the best compared with the effectiveness of the standard square and the circular PZTs, adding the same exciting energy to the PZTs.
三角形板主动减振中的PZT非对称形状优化
本文介绍了一种新型的二维非对称PZT(a-PZT)及其在主动减振三角板中的作用。选取具有简支边的等腰直角三角形板作为研究对象。为了确定a-PZT的不对称性及其在板上的分布,使用了梁的最大弯矩准则。该判据首先指出了a-PZT的精确中心位置。这是在板弯曲力矩达到最大值的点上。接下来,在这一点上,假设压电体由位于中心径向的活性纤维组成。每个纤维作为一个单独的致动器作用在板上。接下来,在每个方向上,通过最小化振动的振幅,从数学上找到致动器的不对称性。通过连接单个纤维的外边缘,获得了2D a-PZT。定量证实,与标准正方形和圆形PZT的效率相比,新型a-PZT的效果最好,为PZT添加了相同的激发能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Archives of Acoustics
Archives of Acoustics 物理-声学
CiteScore
1.80
自引率
11.10%
发文量
0
审稿时长
6-12 weeks
期刊介绍: Archives of Acoustics, the peer-reviewed quarterly journal publishes original research papers from all areas of acoustics like: acoustical measurements and instrumentation, acoustics of musics, acousto-optics, architectural, building and environmental acoustics, bioacoustics, electroacoustics, linear and nonlinear acoustics, noise and vibration, physical and chemical effects of sound, physiological acoustics, psychoacoustics, quantum acoustics, speech processing and communication systems, speech production and perception, transducers, ultrasonics, underwater acoustics.
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