Bayesian model updating using incomplete modal data without mode matching

Hao Sun; Oral Büyüköztürk

doi:10.1117/12.2219300

1 April 2016 Bayesian model updating using incomplete modal data without mode matching

Hao Sun, Oral Büyüköztürk

Proceedings Volume 9805, Health Monitoring of Structural and Biological Systems 2016; 98050D (2016) https://doi.org/10.1117/12.2219300
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2016, Las Vegas, Nevada, United States

Abstract

This study investigates a new probabilistic strategy for model updating using incomplete modal data. A hierarchical Bayesian inference is employed to model the updating problem. A Markov chain Monte Carlo technique with adaptive random-work steps is used to draw parameter samples for uncertainty quantification. Mode matching between measured and predicted modal quantities is not required through model reduction. We employ an iterated improved reduced system technique for model reduction. The reduced model retains the dynamic features as close as possible to those of the model before reduction. The proposed algorithm is finally validated by an experimental example.

Conference Presentation

Citation Download Citation

Hao Sun and Oral Büyüköztürk "Bayesian model updating using incomplete modal data without mode matching", Proc. SPIE 9805, Health Monitoring of Structural and Biological Systems 2016, 98050D (1 April 2016); https://doi.org/10.1117/12.2219300

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