Results Obtained by Minimising Natural Frequency and Mac-Value Errors of a Plate Model

Bohle, Karsten; Fritzen, Claus‐Peter

doi:10.1006/mssp.2002.1539

Cited by 33 publications

(17 citation statements)

References 2 publications

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“…Mottershead and Friswell 1993;Bohle and Fritzen 2003;Teughels et al 2003;Lam et al 2004;Christodoulou and Papadimitriou 2007) to estimate structural parameters associated with a finite element model of a structure. This calibration procedure provides useful insight into the range of validity of the modelling assumptions and is used to improve our understanding of the dynamic behaviour of the structure and its components.…”

Section: Introductionmentioning

confidence: 99%

Structural identification of Egnatia Odos bridges based on ambient and earthquake induced vibrations

Ntotsios

Karakostas

Lekidis

et al. 2008

Bull Earthquake Eng

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Abstract:The dynamic characteristics of two representative R/C bridges on Egnatia Odos motorway in Greece are estimated based on low amplitude ambient and earthquake-induced vibrations. The present work outlines the instrumentation details, algorithms for computing modal characteristics (modal frequencies, damping ratios and modeshapes), modal-based finite element model updating methods for estimating structural parameters, and numerical results for the modal and structural dynamic characteristics of the two bridges based on ambient and earthquake induced vibrations. Transverse, bending and longitudinal modes are reliably identified and stiffness-related properties of the piers, deck and elastomeric bearings of the finite element models of the two bridges are estimated. Results provide qualitative and quantitative information on the dynamic behavior of the bridge systems and their components under low-amplitude vibrations. Modeling assumptions are discussed based on the differences in the characteristics identified from ambient and earthquake vibration measurements. The sources of the differences observed between the identified modal and structural characteristics of the bridges and those predicted by finite element models used for design are investigated and properly justified.

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Section: Introductionmentioning

confidence: 99%

Structural identification of Egnatia Odos bridges based on ambient and earthquake induced vibrations

Ntotsios

Karakostas

Lekidis

et al. 2008

Bull Earthquake Eng

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“…Filippov and Sergei did their investigation on the low frequencies and vibration modes of a thin cylindrical shell joined with an annular thin plate by means of asymptotic and numerical methods [6]. A plate model of the Garteur structure was developed and updated by Bohle and Fritzen [7]. In the paper the different modules used for model updating yielded satisfactory results both in the improvement of the initial model and the prediction of modifications in the structure.…”

Section: Introductionmentioning

confidence: 91%

Natural frequencies of circular annular plates with variable thickness by a new method

Liang

Zhang

Chen

2007

International Journal of Pressure Vessels and Piping

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“…After constructing the Kriging model by the initial sample points, it is easy to get the prediction and its MSE of any point by Equations (7) and (8). The EGO algorithm treats the uncertainty in the prediction as a Gaussian probability density function with the predicted value as mean value and the MSE as variance, as shown in Figure 1b.…”

Section: Efficient Global Optimizationmentioning

confidence: 99%

A Kriging Model Based Finite Element Model Updating Method for Damage Detection

et al. 2017

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Abstract:Model updating is an effective means of damage identification and surrogate modeling has attracted considerable attention for saving computational cost in finite element (FE) model updating, especially for large-scale structures. In this context, a surrogate model of frequency is normally constructed for damage identification, while the frequency response function (FRF) is rarely used as it usually changes dramatically with updating parameters. This paper presents a new surrogate model based model updating method taking advantage of the measured FRFs. The Frequency Domain Assurance Criterion (FDAC) is used to build the objective function, whose nonlinear response surface is constructed by the Kriging model. Then, the efficient global optimization (EGO) algorithm is introduced to get the model updating results. The proposed method has good accuracy and robustness, which have been verified by a numerical simulation of a cantilever and experimental test data of a laboratory three-story structure.

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Results Obtained by Minimising Natural Frequency and Mac-Value Errors of a Plate Model

Cited by 33 publications

References 2 publications

Structural identification of Egnatia Odos bridges based on ambient and earthquake induced vibrations

Structural identification of Egnatia Odos bridges based on ambient and earthquake induced vibrations

Natural frequencies of circular annular plates with variable thickness by a new method

A Kriging Model Based Finite Element Model Updating Method for Damage Detection

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