Model validation using iterative finite element model updating

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Original languageEnglish
Title of host publicationProceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics
EditorsW. Desmet, B. Pluymers, D. Moens, S. Vandemaele
Pages1951-1960
Number of pages10
ISBN (electronic)9789082893113
Publication statusPublished - 2020
Event2020 International Conference on Noise and Vibration Engineering, ISMA 2020 and 2020 International Conference on Uncertainty in Structural Dynamics, USD 2020 - online (Leuven), Belgium
Duration: 7 Sept 20209 Sept 2020

Abstract

With this work, we present an iterative finite element (FE) model updating procedure using a stiffness distribution function for the validation of numerical models based on modal parameters. When the modal parameters of an initial FE model are compared to a real structure, a multitude of deviations can usually be observed. Updating parameters of the FE model to fit the measured behaviour of the structure has proven to be an operable approach to assess these deviations. In order to keep the amount of design variables low, model updating procedures commonly involve previous assumptions about uncertain regions in the numerical model. As our aim is to remove the dependence on prior assumptions, we employ a stiffness distribution function, described by only few parameters. Thereby, the application of an iterative updating scheme allows us to determine multiple deviations in the FE model without previous knowledge about their geometric distribution.

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Model validation using iterative finite element model updating. / Bruns, M.; Hofmeister, B.; Hübler, C. et al.
Proceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics. ed. / W. Desmet; B. Pluymers; D. Moens; S. Vandemaele. 2020. p. 1951-1960.

Research output: Chapter in book/report/conference proceedingConference contributionResearch

Bruns, M, Hofmeister, B, Hübler, C & Rolfes, R 2020, Model validation using iterative finite element model updating. in W Desmet, B Pluymers, D Moens & S Vandemaele (eds), Proceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics. pp. 1951-1960, 2020 International Conference on Noise and Vibration Engineering, ISMA 2020 and 2020 International Conference on Uncertainty in Structural Dynamics, USD 2020, online (Leuven), Belgium, 7 Sept 2020. <https://www.researchgate.net/publication/344562565_Model_validation_using_iterative_finite_element_model_updating>
Bruns, M., Hofmeister, B., Hübler, C., & Rolfes, R. (2020). Model validation using iterative finite element model updating. In W. Desmet, B. Pluymers, D. Moens, & S. Vandemaele (Eds.), Proceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics (pp. 1951-1960) https://www.researchgate.net/publication/344562565_Model_validation_using_iterative_finite_element_model_updating
Bruns M, Hofmeister B, Hübler C, Rolfes R. Model validation using iterative finite element model updating. In Desmet W, Pluymers B, Moens D, Vandemaele S, editors, Proceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics. 2020. p. 1951-1960
Bruns, M. ; Hofmeister, B. ; Hübler, C. et al. / Model validation using iterative finite element model updating. Proceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics. editor / W. Desmet ; B. Pluymers ; D. Moens ; S. Vandemaele. 2020. pp. 1951-1960
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abstract = "With this work, we present an iterative finite element (FE) model updating procedure using a stiffness distribution function for the validation of numerical models based on modal parameters. When the modal parameters of an initial FE model are compared to a real structure, a multitude of deviations can usually be observed. Updating parameters of the FE model to fit the measured behaviour of the structure has proven to be an operable approach to assess these deviations. In order to keep the amount of design variables low, model updating procedures commonly involve previous assumptions about uncertain regions in the numerical model. As our aim is to remove the dependence on prior assumptions, we employ a stiffness distribution function, described by only few parameters. Thereby, the application of an iterative updating scheme allows us to determine multiple deviations in the FE model without previous knowledge about their geometric distribution.",
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N1 - Funding Information: We greatly acknowledge the financial support of the German Federal Ministry for Economic Affairs and Energy (research projects Multivariates Schadensmonitoring von Rotorblättern, FKZ 0324157A, Optimierung der Bemessung hybrider Türme und Entwicklung eines geeigneten Monitoringkonzepts, FKZ 0324221A & Einfluss der Vibrationsparameter auf die Installation und das Tragverhalten von Monopiles, FKZ 03EE3017C), that enabled this work.

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N2 - With this work, we present an iterative finite element (FE) model updating procedure using a stiffness distribution function for the validation of numerical models based on modal parameters. When the modal parameters of an initial FE model are compared to a real structure, a multitude of deviations can usually be observed. Updating parameters of the FE model to fit the measured behaviour of the structure has proven to be an operable approach to assess these deviations. In order to keep the amount of design variables low, model updating procedures commonly involve previous assumptions about uncertain regions in the numerical model. As our aim is to remove the dependence on prior assumptions, we employ a stiffness distribution function, described by only few parameters. Thereby, the application of an iterative updating scheme allows us to determine multiple deviations in the FE model without previous knowledge about their geometric distribution.

AB - With this work, we present an iterative finite element (FE) model updating procedure using a stiffness distribution function for the validation of numerical models based on modal parameters. When the modal parameters of an initial FE model are compared to a real structure, a multitude of deviations can usually be observed. Updating parameters of the FE model to fit the measured behaviour of the structure has proven to be an operable approach to assess these deviations. In order to keep the amount of design variables low, model updating procedures commonly involve previous assumptions about uncertain regions in the numerical model. As our aim is to remove the dependence on prior assumptions, we employ a stiffness distribution function, described by only few parameters. Thereby, the application of an iterative updating scheme allows us to determine multiple deviations in the FE model without previous knowledge about their geometric distribution.

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