Appropriateness of shear-building models for ASCE SHM Benchmark structure
The IASC-ASCE Structural Health Monitoring Task Group had developed a series of benchmark problems,and participants of the benchmark study were charged with using a 12-DOF(degrees-of-freedom)shear building as their identification model.The present article addresses the modeling and parameter errors of using this particular model for the purpose of damage detection,while the measurements of damaged structures are synthesized from a full-order finite-element model.First,a model conversion technique is utilized to calibrate the mass and stiffness matrices of the baseline identification model,and a physically meaningful 12-DOF shear building model that preserves the first three modes of the full-order model is obtained.Sequentially,this calibrated model is employed as the baseline model while performing the damage detection under various damage scenarios.Both the model conversion technique and the damage detection algorithm in this study follow the framework of the cross-model cross-mode(CMCM)method,which was developed originally for model updating.Numerical results indicate that a 12-DOF shear building model is an over-simplified identification model,through which only idealized damage situations for the benchmark structure can be detected.
Benchmark Structure Health Monitoring damage detection
M. Zhang H.J. Li S.-L. J. Hu
College of Engineering,Ocean University of China,Qingdao,CHINA Department of Ocean Engineering,University of Rhode Island,Narragansett,RI 02882-1197,USA
国际会议
The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)
重庆·南京
英文
2007-05-01（万方平台首次上网日期，不代表论文的发表时间）