Damage identification of pipeline structure based on curvature modal difference and genetic algorithm

摘要：

Based on the modal theory, a new method for damage identification in pipeline is investigated, combining the curvature modal difference and genetic algorithm. According to the damage location of the pipeline which is obtained by analyzing the curvature modal difference, the genetic algorithm is proposed to identify the damage degree. In the genetic algorithm, the damage factor of damage element and the firstorder norm of curvature modal difference are respectively defined as the identification parameter and the objective function. By simulating the detection to the damage in pipeline, it is shown that this method can not only determine the pipeline damage location, but also quantify the damage degree. Moreover, the error of the result is within 1％.

关键词： Pipeline Curvature modal difference Genetic algorithm Damage identification

作者: Zhanfeng Hao Shaoping Zhou Aiqiang Cui Quan Yuan

作者单位: Key Laboratory of Pressure Systems and Safety, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China

会议类型: 国际会议

会议名称: 2012 International Symposium on Structural Integrity 2012国际结构完整性学术研讨会 ISSI 2012

会议地点: 济南

会议语种:英文

页码: 399-403

在线出版日期: 2012-10-31（万方平台首次上网日期，不代表论文的发表时间）