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Applicability of the Vibration Correlation Technique for Estimation of the Buckling Load in Axial Compression of Cylindrical Isotropic Shells with and without Circular Cutouts.
- Source :
-
Shock & Vibration . 11/29/2017, p1-14. 14p. - Publication Year :
- 2017
-
Abstract
- Applicability of the vibration correlation technique (VCT) for nondestructive evaluation of the axial buckling load is considered. Thin-walled cylindrical shells with and without circular cutouts have been produced by adhesive overlap bonding from a sheet of aluminium alloy. Both mid-surface and bond-line imperfections of initial shell geometry have been characterized by a laser scanner. Vibration response of shells under axial compression has been monitored to experimentally determine the variation of the first eigenfrequency as a function of applied load. It is demonstrated that VCT provides reliable estimate of buckling load when structure has been loaded up to at least 60% of the critical load. This applies to uncut structures where global failure mode is governing collapse of the structure. By contrast, a local buckling in the vicinity of a cutout could not be predicted by VCT means. Nevertheless, it has been demonstrated that certain reinforcement around cutout may enable the global failure mode and corresponding reliability of VCT estimation. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10709622
- Database :
- Academic Search Index
- Journal :
- Shock & Vibration
- Publication Type :
- Academic Journal
- Accession number :
- 126483619
- Full Text :
- https://doi.org/10.1155/2017/2983747