Sökning: onr:"swepub:oai:DiVA.org:lnu-34583" >
Informative Data fo...
Informative Data for Model Parameter Updating
-
- Linderholt, Andreas, 1968- (författare)
- Chalmers University of Technology,Maskinteknik
-
- Abrahamsson, Thomas, 1956- (författare)
- Chalmers University of Technology,Strukturdynamik
-
- Hoang, Nam (författare)
- Structural Engineering Program, School of Civil Engineering, Asian Institute of Technology
-
(creator_code:org_t)
- Orlando, Florida, 2001
- 2001
- Engelska.
-
Ingår i: Proceedings of IMAC XIX. - Orlando, Florida. ; , s. 581-586
- Relaterad länk:
-
https://lnu.diva-por... (primary) (Raw object)
-
visa fler...
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- Before an error localization is to be carried out a preparatory error localization, using only data from an FE-analysis, is justified. The purpose of such preparatory work is both to decide what parameters to use to quantify model errors and to design opti- mal tests for the error localization. A reasonable re- quirement on the parameterization is that the test data are informative with respect to the parameters. That implies that a change of a certain parameter should give a detectable change in the model’s dy- namic behaviour. The aim of this study is to examine data informa- tivity with respect to physical parameters, used in error localization and model updating. The data in- formativity is here quantified by the use of the Fisher information matrix. It is shown that the in- formativity depends on both excitation and meas- urements. It is reasonable to believe that parameters of which test data have low informativ- ity, are of no use for error localization and should not be used for model updating purposes. Such pa- rameters should be excluded from the parameters set or the test aimed for its determination should be re-designed.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Nyckelord
- Informative Data Finite Element Model Updating
- Mechanical Engineering
- Maskinteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)