Investigation of existing damage mechanism and retrofitting of Skeuophylakion under seismic loads

Kocatürk, Turgut; Erdoğan, Yıldırım Serhat; Demir, Cihan; Gökçe, Ahmet; Ulukaya, Serhan; Yüzer, Nabi

doi:10.1016/j.engstruct.2016.11.045

Cited by 6 publications

(2 citation statements)

References 23 publications

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“…Application of FE model updating to ancient masonry buildings is relatively recent. In [4,5,12,13,15,20,22,24,27,33,37,38,43] a vibration-based model updating is conducted, and preliminary FE models are tuned by using the dynamic characteristics determined through system identification techniques. In the papers cited above the modal analysis of the FE models are conducted via commercial codes, and the model updating procedure is implemented separately.…”

Section: Introductionmentioning

confidence: 99%

Finite element model updating for structural applications

Girardi

Padovani

Pellegrini

et al. 2020

Journal of Computational and Applied Mathematics

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A novel method for performing model updating on finite element models is presented. The approach is particularly tailored to modal analyses of buildings, by which the lowest frequencies, obtained by using sensors and system identification approaches, need to be matched to the numerical ones predicted by the model. This is done by optimizing some unknown material parameters (such as mass density and Young's modulus) of the materials and/or the boundary conditions, which are often known only approximately. In particular, this is the case when considering historical buildings.The straightforward application of a general-purpose optimizer can be impractical, given the large size of the model involved. In the paper, we show that, by slightly modifying the projection scheme used to compute the eigenvalues at the lowest end of the spectrum one can obtain local parametric reduced order models that, embedded in a trust-region scheme, form the basis for a reliable and efficient specialized algorithm.We describe an optimization strategy based on this approach, and we provide numerical experiments that confirm its effectiveness and accuracy.

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Section: Introductionmentioning

confidence: 99%

Finite element model updating for structural applications

Girardi

Padovani

Pellegrini

et al. 2020

Journal of Computational and Applied Mathematics

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“…Although application of FE model updating to historic masonry buildings is relatively recent, the literature on the subject is plentiful, [2], [30], [55], [13], [54], [51], [3], [20], [15], [17], [16], [18], [25], [28], [38], [62], [1], [10], [12], [26], [27], and focused on case studies of historical interest for which a vibration-based model updating is conducted. Preliminary FE models are calibrated using the modal properties determined through system identification techniques.…”

Section: Introductionmentioning

confidence: 99%

A finite element model updating method based on global optimization

Girardi,

Padovani,

Pellegrini

et al. 2020

Preprint

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Finite element model updating of a structure made of linear elastic materials is based on the solution of a minimization problem. The goal is to find some unknown parameters of the finite element model (elastic moduli, mass densities, constraints and boundary conditions) that minimize an objective function which evaluates the discrepancy between experimental and numerical dynamic properties. The objective function depends nonlinearly on the parameters and may have multiple local minimum points.

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