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EnglishFree vibration and Ljapounov stability of compressed open thin-walled beams with a cross-section reduction are studied by a in-house finite differences numerical code, based on a refined direct beam model and allowing for investigating elastic stability of non-trivial equilibrium paths in a dynamic setting. The benchmark is a beam with doubly symmetric cross-section and non-zero warping rigidity, under free, semi-, and fully restrained warping at its ends. In all cases, the results of the direct model are compared to finite element and/or experimental ones. The reduction in the cross-section rigidity induces a weakening that may model a local damage; thus, the present investigation may be useful with an outlook to damage monitoring and identification.
Vibration and buckling of open TWBs with local weakening / Piana, Gianfranco; Carpinteri, Alberto; Lofrano, E.; Ruta, G.. - In: PROCEDIA ENGINEERING. - ISSN 1877-7058. - ELETTRONICO. - 199(2017), pp. 242-247. ((Intervento presentato al convegno X International Conference on Structural Dynamics, EURODYN 2017 tenutosi a Rome nel 10-13 September, 2017 [10.1016/j.proeng.2017.09.012].
| Titolo: | Vibration and buckling of open TWBs with local weakening | |
| Autori: | ||
| Data di pubblicazione: | 2017 | |
| Rivista: | ||
| Abstract: | Free vibration and Ljapounov stability of compressed open thin-walled beams with a cross-section ...reduction are studied by a in-house finite differences numerical code, based on a refined direct beam model and allowing for investigating elastic stability of non-trivial equilibrium paths in a dynamic setting. The benchmark is a beam with doubly symmetric cross-section and non-zero warping rigidity, under free, semi-, and fully restrained warping at its ends. In all cases, the results of the direct model are compared to finite element and/or experimental ones. The reduction in the cross-section rigidity induces a weakening that may model a local damage; thus, the present investigation may be useful with an outlook to damage monitoring and identification. | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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http://hdl.handle.net/11583/2689719
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