The Effects Of Large Vibration Amplitudes On The Mode Shapes And Natural Frequencies Of Thin Elastic Structures, Part III: Fully Clamped Rectangular Isotropic Plates—Measurements Of The Mode Shape Amplitude Dependence And The Spatial Distribution Of Harmonic Distortion
The Effects Of Large Vibration Amplitudes On The Mode Shapes And Natural Frequencies Of Thin Elastic Structures, Part III: Fully Clamped Rectangular Isotropic Plates—Measurements Of The Mode Shape Amplitude Dependence And The Spatial Distribution Of Harmonic Distortion
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大振动振幅对薄弹性结构模态振型和固有频率的影响，第三部分：全夹紧矩形各向同性板 - 模态振型振幅依赖性和谐波畸变空间分布的测量
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
R. White
中科院分区：
文献类型：
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作者：
R. Benamar;M. Bennouna;R. White
本文通过实验研究了全夹紧矩形均匀板的谐振频率与振幅的关系以及一、二次谐波分量的空间分布。采用电动力点激励和非接触式光学振动传感器进行响应测量，研究了复谐波畸变的空间分布。为了获得分布载荷下的高振动幅值，还进行了一组进阶波洞试验，在总声压级高达155 dB的情况下，对被测板进行了高水平的声激励。给出了这些实验测量的结果，并与理论预测进行了比较。
Abstract In this work, the amplitude dependence of the resonance frequency and the spatial distribution of the first and second harmonic components of the dynamic response of a fully clamped rectangular homogeneous plate have been investigated experimentally. By using electrodynamic point excitation at the centre of the plate and a non-contacting optical vibration transducer for response measurement, the spatial distribution of the complex harmonic distortion has been investigated. In order to reach high amplitudes of vibration under distributed loading, a set of tests were also carried out with a progressive wave tunnel, in which the plates tested were subjected to high level acoustic excitation at overall sound pressure levels up to 155 dB. The results of such experimental measurements are given and compared with theoretical predictions.