Finite Element Model Updating Using Bayesian Approach

Tshilidzi Marwala; Lungile Mdlazi; Sibusiso Sibisi

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arXiv · 0705.2515

Finite Element Model Updating Using Bayesian Approach

Tshilidzi Marwala·Lungile Mdlazi·Sibusiso Sibisi

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Abstract

This paper compares the Maximum-likelihood method and Bayesian method for finite element model updating. The Maximum-likelihood method was implemented using genetic algorithm while the Bayesian method was implemented using the Markov Chain Monte Carlo. These methods were tested on a simple beam and an unsymmetrical H-shaped structure. The results show that the Bayesian method gave updated finite element models that predicted more accurate modal properties than the updated finite element models obtained through the use of the Maximum-likelihood method. Furthermore, both these methods were found to require the same levels of computational loads.

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Tshilidzi Marwala, Lungile Mdlazi, Sibusiso Sibisi. 2007-05-17. Finite Element Model Updating Using Bayesian Approach. https://arxiv.org/abs/0705.2515

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