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。
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.
出处
《海洋工程》
CSCD
北大核心
2006年第2期14-20,共7页
The Ocean Engineering
基金
国家自然科学基金重点资助项目(50479027)
关键词
损伤诊断
海洋平台
序列二次规划
最小二乘法
damage diagnosis
offshore platform
sequential quadratic programming
least-square method
