1 April 2015 Nonlinear structural finite element model updating and uncertainty quantification
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Abstract
This paper presents a framework for nonlinear finite element (FE) model updating, in which state-of-the-art nonlinear structural FE modeling and analysis techniques are combined with the maximum likelihood estimation method (MLE) to estimate time-invariant parameters governing the nonlinear hysteretic material constitutive models used in the FE model of the structure. The estimation uncertainties are evaluated based on the Cramer–Rao lower bound (CRLB) theorem. A proof-of-concept example, consisting of a cantilever steel column representing a bridge pier, is provided to verify the proposed nonlinear FE model updating framework.
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Hamed Ebrahimian, Hamed Ebrahimian, Rodrigo Astroza, Rodrigo Astroza, Joel P. Conte, Joel P. Conte, } "Nonlinear structural finite element model updating and uncertainty quantification", Proc. SPIE 9437, Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015, 943716 (1 April 2015); doi: 10.1117/12.2084541; https://doi.org/10.1117/12.2084541
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