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Modeling and structural optimization of a Lorentz force-based omnidirectional electromagnetic acoustic transducer

机译:基于洛伦兹力的全向电磁声换能器的建模与结构优化

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In this paper we introduce an axisymmetric model of an omnidirectional electromagnetic acoustic transducer used to generate Lamb waves in conductive plates. The amplitudes of the displacement components are used for optimizations of the transducer. Three approaches to obtain the amplitudes are discussed. The first approach is solving the peak values of the envelopes of the time waveforms from the time domain simulations. The second approach also involves calculation of the peaks, but the waveforms are from frequency domain model combined with the forward and inverse Fourier transforms. The third approach involves a single frequency in the frequency domain model. The amplitudes are used in single objective and multi-objective optimizations to selectively generate A0 mode Lamb waves, implemented with the generic algorithms.
机译:在本文中,我们引入了用于在导电板中产生羊毛的全向电磁声换能器的轴对称模型。位移部件的幅度用于换能器的优化。讨论了获得幅度的三种方法。第一方法正在从时域仿真求解时间波形的信封的峰值。第二种方法还涉及计算峰值,但波形来自频域模型与前向和逆傅里叶变换相结合。第三种方法涉及频域模型中的单个频率。幅度用于单个物镜和多目标优化,以选择性地生成与通用算法实现的A0模式跛行波。

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