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振动模态分析法在单立柱海洋平台上应用

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Indexed by:期刊论文

Date of Publication:2008-08-15

Journal:海洋工程

Included Journals:PKU、ISTIC、CSCD

Volume:26

Issue:3

Page Number:33-37

ISSN No.:1005-9865

Key Words:海洋平台;参数识别;时频分布;经验模态分解

Abstract:提出联合经验模态分解和二次时频分布的参数识别方法.将结构的响应信号用经验模态分解的方法分解为单频率响应的振动信号,进而计算模态频率和模态阻尼,用Choi-Williams分布计算模态振型.对单立柱海洋平台的计算表明,该方法能比较理想地识别出结构的模态参数,且具有较强的抗噪能力.

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