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首页> 外文期刊>Journal of Mechanical Science and Technology >Statistical energy analysis of non-resonant response of isotropic orthotropic plates
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Statistical energy analysis of non-resonant response of isotropic orthotropic plates

机译：各向同性正交各向异性板非共振响应的统计能量分析

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摘要

The conventional SEA model considers only the resonant part of the structural response to an acoustic excitation^ Therefore, this study investigates non-resonant responses of isotropic and orthotropic plates to acoustically induced vibrations in a reverberation chamber. A modified SEA model is introduced to predict the non-resonant p ate response. The estimated non-resonant and resonant responses are then compared with those obtained experimentally and good agreement is observed for isotropic and orthotropic plates. For an isotropic plate with a small dissipation loss tactor when the non-resonant part is ignored, the estimated response can lead to significant errors at frequencies near and above the critical frequency, while large errors may occur at frequencies below the critical frequency for an orthotropic plate with a high dissipation loss factor. The experimental study indicates that the non-resonant response component should be included in the estimated responses to enhance predictive accuracy.
机译：传统的SEA模型仅考虑结构对声激发的共振部分^因此，本研究研究了各向同性和正交各向异性板对混响室内声诱发振动的非共振响应。引入了一种改进的SEA模型来预测非共振声音响应。然后将估计的非共振和共振响应与通过实验获得的响应进行比较，并观察到各向同性和正交各向异性板的良好一致性。对于忽略了非谐振部分的，损耗损耗因子较小的各向同性板，在接近或高于临界频率的频率处，估计响应会导致明显的误差，而在正交各向异性的临界频率以下的频率中，可能会出现较大的误差。损耗损耗因子高的金属板。实验研究表明，非共振响应成分应包括在估计响应中，以增强预测准确性。

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