| 基于模态应变能法的导管架平台损伤诊断试验研究 |
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| 引用本文： | 李绂,刘杰鸣,黄维平,石湘.基于模态应变能法的导管架平台损伤诊断试验研究[J].中国海洋平台,2011,26(4):19-23. |
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| 作者姓名： | 李绂 刘杰鸣 黄维平 石湘 |
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| 作者单位： | 1. 中国石油集团海洋工程有限公司,北京,100176
2. 中国海洋大学,青岛,266100 |
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| 摘 要： | 基于模态应变能法研究了导管架平台的结构损伤诊断问题，利用模型试验研究了模态应变能法对不同模态之间影响的敏感性；研究了模态应变能法的损伤定位和损伤估计的可靠性。采用标量型ARMA模型识别出结构的三阶模态参数，采用模态应变能法分别利用结构的前两阶模态参数和前三阶模态参数对不同损伤工况进行了损伤定位和损伤评估。研究表明，模态应变能法对不同模态之间的影响不敏感，具有较高的损伤定住精度，但损伤程度估计的精度不理想。
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| 关 键 词： | 导管架平台 结构损伤诊断 模型试验 模态应变能法 ARMA模型 |
Experimental Study on Damage Detection of Jacket Platform Based on Mode Strain Energy Method |
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| LI fu,LIU Jie-ming,HUANG Wei-ping,SHI Xiang.Experimental Study on Damage Detection of Jacket Platform Based on Mode Strain Energy Method[J].China offshore Platform,2011,26(4):19-23. |
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| Authors: | LI fu LIU Jie-ming HUANG Wei-ping SHI Xiang |
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| Affiliation: | LI fu~1,LIU Jie-ming~1,HUANG Wei-ping~2,SHI Xiang~2 (1.China National Petroleum Offshore Engineering Co.Ltd.,Beijing 100176,China,2.Ocean University of China,Qingdao 266100,China) |
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| Abstract: | Damage detection of jacket platform is studied based on mode strain energy method.The effect of different modes on the damage diagnosis by mode strain energy method and the reliability of damage locating and assessing using mode strain energy method are investigated. The first three frequencies and mode shapes are identified by using scalar ARMA model.The structural damages with different flaw cases are located and eveluated based on first two and first three frequencies and mode shapes.The results show tha... |
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| Keywords: | jacket platform structural damage detection model test mode strain energy method ARMA model |
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