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Proceedings Paper

Updating FEM using state-space-based signal processing techniques
Author(s): Gregory C. Burnett; David B. McCallen; Charles R. Noble
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Paper 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.

Paper Details

Date Published: 9 June 2000
PDF: 7 pages
Proc. SPIE 3995, Nondestructive Evaluation of Highways, Utilities, and Pipelines IV, (9 June 2000); doi: 10.1117/12.387828
Show Author Affiliations
Gregory C. Burnett, Lawrence Livermore National Lab. (United States)
David B. McCallen, Lawrence Livermore National Lab. (United States)
Charles R. Noble, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 3995:
Nondestructive Evaluation of Highways, Utilities, and Pipelines IV
A. Emin Aktan; Stephen R. Gosselin; Stephen R. Gosselin, Editor(s)

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