结构模态的分区测试方法研究

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大型复杂结构通常有尺度大、刚度高、阻尼衰减明显等特性,对其进行模态试验难以激起整个结构振动,导致测试信噪比低。本文提出带过渡区的分区模态测试方法有效提高模态测试信噪比,并提出振型可信度参数,预判分区模态测试结果。模型实验验证了本文所提出方法的可靠性和可行性,为工程中应用分区模态测试奠定了技术基础。
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