| 基于不完备模态信息的海洋平台损伤诊断研究 |
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| 引用本文： | 刁延松,李华军,王树青,石湘.基于不完备模态信息的海洋平台损伤诊断研究[J].海洋工程,2006,24(2):14-20. |
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| 作者姓名： | 刁延松 李华军 王树青 石湘 |
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| 作者单位： | 中国海洋大学,工程学院,山东,青岛,266071 |
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| 摘 要： | 首先利用测量自由度正则化损伤指标向量得到损伤的大致区域;其次,在选定的区域内分别采用序列二次规划算法和最小二乘法来诊断损伤构件及其损伤程度,并对其结果进行了比较。数值模拟表明,仅需少量低阶模态和部分测量自由度,上述损伤诊断算法便可完成海洋平台的损伤诊断。
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| 关 键 词： | 损伤诊断 海洋平台 序列二次规划 最小二乘法 |
| 文章编号： | 1005-9865（2006）02-00014-07 |
| 收稿时间： | 2005-04-08 |
| 修稿时间： | 2005年4月8日 |
Damage detection of offshore platform with incomplete modal information |
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| DIAO Yan-song,LI Hua-jun,WANG Shu-qing,SHI Xiang.Damage detection of offshore platform with incomplete modal information[J].Ocean Engineering,2006,24(2):14-20. |
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| Authors: | DIAO Yan-song LI Hua-jun WANG Shu-qing SHI Xiang |
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| Institution: | Engineering College, Ocean University of China, Qingdao 266071, China |
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| Abstract: | Firstly,the damaged areas were approximately localized by the damage index of the measured degree of freedom;secondly,the damaged members were located and quantitatively evaluated by the sequential quadratic programming and least-square method in the selected areas,and the results were compared.According to the simulation results,only a few low modes and limited measurements of degree of freedom were needed for the algorithm to diagnose damage for the offshore platform. |
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| Keywords: | damage diagnosis offshore platform sequential quadratic programming least-square method |
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