Conference paper · Book chapter
Modal Truncation in Experimental Modal Analysis
In
Conference Proceedings of the Society for Experimental Mechanics Series
—
2018, pp. 143-152
Abstract
Some methods in experimental modal analysis rely on a finite set of modes and they neglect the higher modes. However, this approach causes a truncation of the modal decomposition and the modal truncation introduces errors of unknown magnitude. In this paper the effect of modal truncation is investigated on a test specimen in the laboratory.
It is found that the system response is dependent of the frequency and the distribution of the load. Modal truncation can introduce significant errors if the set of mode shapes does not efficiently span the spatial distribution of the load.
| Language: | English |
|---|---|
| Publisher: | Springer |
| Year: | 2018 |
| Pages: | 143-152 |
| Proceedings: | 36th International Modal Analysis Conference |
| Series: | Conference Proceedings of the Society for Experimental Mechanics Series |
| Journal subtitle: | Proceedings of the 36th Imac, a Conference and Exposition on Structural Dynamics 2018 |
| ISBN: | 3319746995 , 3319747002 , 9783319746999 and 9783319747002 |
| ISSN: | 21915644 |
| Types: | Conference paper and Book chapter |
| DOI: | 10.1007/978-3-319-74700-2_15 |
| ORCIDs: | Brincker, Rune |
