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Model Calibration of a Locally Non-linear Structure Utilizing Multi Harmonic Response Data
Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för maskinteknik (MT). (Maskinteknik)
Chalmers University of Technology.
Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för maskinteknik (MT). (Maskinteknik)ORCID-id: 0000-0002-4404-5708
Chalmers University of Technology. (Strukturdynamik)
2014 (engelsk)Inngår i: Nonlinear Dynamics, Volume 2: Proceedings of the 32nd IMAC, A Conference and Exposition on Structural Dynamics, 2014 / [ed] Gaetan Kerschen, Springer, 2014, 97-109 s.Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Model correlation and model calibration using test data are natural ingredients in the process of validating computational models. Here, model calibration for the important sub-class of non-linear systems consisting of structures dominated by linear behavior having presence of local non-linear effects is studied. The focus is on the selection of uncertain model parameters together with the forming of the objective function to be used for calibration. To give precise estimation of parameters in the presence of measurement noise, the objective function data have to be informative with respect to the parameters chosen. Also, to get useful data the excitation force is here designed to be multi-harmonic since steady-state responses at the side frequencies are shown to contain valuable information for the calibration process. In this paper, test data from a replica of the Ecole Centrale de Lyon (ECL) nonlinear benchmark together with steady-state solutions stemming from calculations using the Multi-Harmonic Balancing method are used for illustration of the proposed model calibration procedure.

sted, utgiver, år, opplag, sider
Springer, 2014. 97-109 s.
Serie
Conference Proceedings of the Society for Experimental Mechanics Series, ISSN 2191-5644
Emneord [en]
Nonlinear, Multi-harmonic, Identifiability, Fisher information matrix, Calibration
HSV kategori
Forskningsprogram
Teknik, Maskinteknik
Identifikatorer
URN: urn:nbn:se:lnu:diva-38159DOI: 10.1007/978-3-319-04522-1_9ISI: 000342929100009ISBN: 978-3-319-04522-1 (tryckt)ISBN: 978-3-319-04521-4 (tryckt)OAI: oai:DiVA.org:lnu-38159DiVA: diva2:762945
Konferanse
32 International Modal Analysis Conference on Structural Dynamics, FEB 03-06, 2014, Orlando, FL
Forskningsfinansiär
VINNOVA
Tilgjengelig fra: 2014-11-13 Laget: 2014-11-13 Sist oppdatert: 2017-03-08bibliografisk kontrollert

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