Updating FEM using state-space-based signal processing techniques

Gregory C. Burnett; David B. McCallen; Charles R. Noble

doi:10.1117/12.387828

9 June 2000 Updating FEM using state-space-based signal processing techniques

Gregory C. Burnett, David B. McCallen, Charles R. Noble

Proceedings Volume 3995, Nondestructive Evaluation of Highways, Utilities, and Pipelines IV; (2000) https://doi.org/10.1117/12.387828
Event: SPIE's 5th Annual International Symposium on Nondestructive Evaluation and Health Monitoring of Aging Infrastructure, 2000, Newport Beach, CA, United States

Abstract

Until recently, attempts to update Finite Element Models (FEM) of large structures based upon recording structural motions were mostly ad hoc, requiring a large amount of engineering experience and skill. Studies have been undertaken at LLNL to use state-space based signal processing techniques to locate the existence and type of model mismatches common in FEM. Two different methods (Gauss-Newton gradient search and extended Kalman filter) will be explored, and the preliminary results from a simulated 10 degree of freedom (DOF) building model will be discussed.

Citation Download Citation

Gregory C. Burnett, David B. McCallen, and Charles R. Noble "Updating FEM using state-space-based signal processing techniques", Proc. SPIE 3995, Nondestructive Evaluation of Highways, Utilities, and Pipelines IV, (9 June 2000); https://doi.org/10.1117/12.387828

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