000004865 001__ 4865
000004865 005__ 20141119144600.0
000004865 04107 $$aeng
000004865 046__ $$k2002-06-02
000004865 100__ $$aCaicedo, Juan
000004865 24500 $$aSOLUTION FOR THE SECOND PHASE OF THE ANALYTICAL SHM BENCHMARK PROBLEM

000004865 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004865 260__ $$bColumbia University in the City of New York
000004865 506__ $$arestricted
000004865 520__ $$2eng$$aThis paper addresses the second phase of the IASC-ASCE Structural Health Monitoring (SHM) benchmark problem. This problem was created to improve the understanding of SHM techniques by comparing their performance using a common structure and set of damage cases. The structure selected for this benchmark problem is a four story 2 bay by 2 bay steel frame. Numerical models of the structures have been developed. Damage is simulated by reducing stiffness in members of the structure. The methodology presented here in uses the Natural Excitation Technique (NExT) and the Eigensystem Realization Algorithm (ERA) to identify the natural frequencies and mode shapes of the structure. Using these natural frequencies and mode shapes it is possible to determine the stiffness coefficients of structural members through a least squares solution of the eigenvalue problem. Two different identification models are used and the results are compared. The proposed methodology is shown to be effective in the detection, quantification and location of damage in civil structures. 

000004865 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004865 653__ $$aStructural Health Monitoring, Benchmark Problem, ERA, NExT.

000004865 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004865 720__ $$aCaicedo, Juan$$iDyke, Shirley J.
000004865 8560_ $$ffischerc@itam.cas.cz
000004865 8564_ $$s263646$$uhttps://invenio.itam.cas.cz/record/4865/files/452.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004865 962__ $$r4594
000004865 980__ $$aPAPER