Damage detection in beam-like structures using static shear energy redistribution

作     者：Xi PENG Qiuwei YANG Xi PENG;Qiuwei YANG

作者机构：School of Civil and Transportation EngineeringNingbo University of TechnologyNingbo 315211China Engineering Research Center of Industrial Construction in Civil Engineering of ZhejiangNingbo University of TechnologyNingbo 315211China 

出 版 物：《Frontiers of Structural and Civil Engineering》 (结构与土木工程前沿（英文版）)

年 卷 期：2022年第16卷第12期

页      面：1552-1564页

核心收录：

学科分类：08[工学] 081402[工学-结构工程] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：supported by the National Natural Science Foundation of Zhejiang Province,China(No.LQ20E080013) the Natural Science Foundation of China(Grant No.52008215) the Major Special Science and Technology Project(No.2019B10076) “Ningbo Science and Technology Innovation 2025”and Ningbo Natural Science Foundation Project(No.202003N4169) 

主　　题：damage detection beam structure strain energy static displacement variation energy damage index 

摘      要：In this study,a static shear energy algorithm is presented for the damage assessment of beam-like *** to the energy release principle,the strain energy of a damaged element suddenly changes when structural damage ***,the change in the static shear energy is employed to determine the damage locations in beam-like *** static shear energy is derived from the spectral factorization of the elementary stiffness matrix and structural deflection *** advantage of using shear energy as opposed to total energy is that only a few deflection data points of the beam structure are required during the process of damage *** advantage of the proposed approach is that damage detection can be performed without establishing a structural finiteelement model in *** proposed technique is first validated using a numerical example with single,multiple,and adjacent damage scenarios.A channel steel beam and rectangular concrete beam are employed as experimental cases to further verify the proposed *** results of the simulation and experiment examples indicate that the proposed algorithm provides a simple and effective method for defect localization in beam-like structures.