起重运输机械Issue(18)：26-32,39,8.
基于模态柔度曲率与模型修正的悬臂梁损伤识别方法
摘要
Abstract
Damage identification of cantilever beam is an important basis to judge whether the structure is safe.In order to correctly identify the damage of cantilever beam,in this paper,a structural damage identification method based on modal flexibility curvature and finite element model updating is proposed.Three kinds of cantilever beam specimens under simulated damage conditions were developed.Through the optimal arrangement of sensors,experimental modal analysis was carried out to identify the dynamic characteristics of the structure and the damage location of the structure based on modal flexibility curvature method.Through sensitivity analysis,the finite element model updating method based on Bayesian was carried out to update the model,and the damage degree was determined by evaluating the changes of parameters.Results show that the proposed method can accurately locate the damage and identify the damage degree,which verifies the feasibility and effectiveness of the method.关键词
模态柔度曲率/有限元模型修正/灵敏度分析/结构损伤识别Key words
modal flexibility curvature/finite element model updating/sensitivity analysis/structural damage identification分类
能源科技引用本文复制引用
万闯,闫天红,周国强..基于模态柔度曲率与模型修正的悬臂梁损伤识别方法[J].起重运输机械,2024,(18):26-32,39,8.基金项目
海南省院士创新平台科研项目(YSPTZX202301)、2022年三亚市科技创新专项(2022KJCX52) （YSPTZX202301）
