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Structural model optimization using statistical evaluation (1972)

Kennedy, B. ; Collins, J. D. ; Hart, G. C. ; [et al.]

In: CASI

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Publication Date: 2019-06-27

Description: The results of research in applying statistical methods to the problem of structural dynamic system identification are presented. The study is in three parts: a review of previous approaches by other researchers, a development of various linear estimators which might find application, and the design and development of a computer program which uses a Bayesian estimator. The method is tried on two models and is successful where the predicted stiffness matrix is a proper model, e.g., a bending beam is represented by a bending model. Difficulties are encountered when the model concept varies. There is also evidence that nonlinearity must be handled properly to speed the convergence.

Keywords: STRUCTURAL MECHANICS

Type: NASA-CR-123575

Format: application/pdf

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