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- Abrahamsson, Thomas,1956Chalmers tekniska högskola,Chalmers University of Technology (author)
FEM calibration with FRF damping equalization
- Article/chapterEnglish2014
Publisher, publication year, extent ...
- 2014-03-17
- Cham :Springer International Publishing,2014
Numbers
- LIBRIS-ID:oai:research.chalmers.se:cdebc67e-b957-4899-a0fe-d76fa6feb50e
- ISBN:9783319007670
- https://doi.org/10.1007/978-3-319-04552-8_26DOI
- https://research.chalmers.se/publication/245028URI
Supplementary language notes
- Language:English
- Summary in:English
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Notes
- A finite element model calibration procedure that uses frequency response function data and relies on damping equalization is presented. In this, the dampings of the finite element model and the corresponding experimental model are set equal before calibration. The damping equalization is made to avoid the mode pairing problem that normally needs to be solved in other model updating procedures. It is demonstrated that one particular use of frequency response data gives a calibration deviation metric that is smooth in the variation of model parameters and give a large radius of convergence to the calibration minimum. The method is combined with model reduction for increased speed and employs a minimizing procedure that employs randomized multiple starting points in the parameter space to get to the calibration solution. The performance of the calibration procedure is demonstrated by two numerical examples. © The Society for Experimental Mechanics, Inc. 2014.
Subject headings and genre
- NATURVETENSKAP Geovetenskap och miljövetenskap Geofysik hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences Geophysics hsv//eng
- Calibration procedure
- Mode-matching-free comparison
- Experimental modeling
- Frequency response
- FE model calibration
- Structural dynamics
- Calibration solutions
- Finite element method
- Damping
- Equalizers
- Damping equalization
- Finite element model calibrations
- Mode matching
- Radius of convergence
- Frequency response functions
- FE model
- Frequency response calibration
Added entries (persons, corporate bodies, meetings, titles ...)
- Kammer, D. C.University of Wisconsin Madison (author)
- Chalmers tekniska högskolaUniversity of Wisconsin Madison (creator_code:org_t)
Related titles
- In:Conference Proceedings of the Society for Experimental Mechanics SeriesCham : Springer International Publishing3, s. 265-2782191-56442191-56529783319007670
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