欢迎光临《计算力学学报》官方网站!
基于L1正则化的随机梁式结构静力损伤识别方法
Static damage identification method of random beam structure based on L1 regularization
投稿时间:2018-11-23  修订日期:2018-12-26
DOI:
中文关键词:  随机梁式结构  损伤识别  测量数据  L1正则化  损伤概率
英文关键词:random beam structure  damage identification  measurement data  L1 regularization  damage probability
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位E-mail
黄斌 武汉理工大学土木工程与建筑学院 binhuang@whut.edu.cn 
鲁溢 武汉理工大学土木工程与建筑学院  
摘要点击次数: 221
全文下载次数: 0
中文摘要:
      提出了一种结合摄动法和L1正则化方法的随机梁式结构静力损伤识别方法。该方法考虑了初始模型误差和测量误差的影响,建立了关于随机损伤指数的控制方程,并将摄动法和L1正则化方法相结合,对随机损伤指数的控制方程进行了求解,既而从概率的角度对结构的损伤进行识别。仿真算例和试验结果表明,和传统的最小二乘求解法相比,新的方法能够更为准确地识别多处局部损伤的位置及大小,对实际结构损伤检测具有较好的参考价值。
英文摘要:
      This paper proposes a new static damage identification method of random beam structures based on the perturbation technique and L1 regularization method. Considering the impaction of uncertain model and measurement errors on damage identification, the control equations with respect to the random damage index of beam structure are established. Using the perturbation technique and L1 regularization, the solutions of the random control equations are determined. In this manner, the probability of structural damage can be achieved. From the test results, it is observed that the accuracy of the proposed method is higher than the least squares method to identify the locations and values of multiple local damages. The proposed method can be used in the damage detection of actual structures in the future.
  查看/发表评论  下载PDF阅读器
您是第5196254位访问者
版权所有:《计算力学学报》编辑部
本系统由 北京勤云科技发展有限公司设计