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dc.contributor.authorLiu, Yangen
dc.contributor.authorShu, Dong Weien
dc.identifier.citationLiu, Y., & Shu, D. W. (2015). Effects of edge crack on the vibration characteristics of delaminated beams. Structural engineering and mechanics, 53(4), 767-780.en
dc.description.abstractDelaminations and cracks are common failures in structures. They may significantly reduce the stiffness of the structure and affect their vibration characteristics. In the present study, an analytical solution is developed to study the effect of an edge crack on the vibration characteristics of delaminated beams. The rotational spring model, the „free mode‟ and „constrained mode‟ assumptions in delamination vibration are adopted. This is the first study on how an edge crack affects the vibration characteristic of delaminated beams and new nondimensional parameters are developed accordingly. The crack may occur inside or outside the delaminated area and both cases are studied. Results show that the effect of delamination length and thickness-wise location on reducing the natural frequencies is aggravated by an increasing crack depth. The location of the crack also influences the effect of delamination, but such influence is different between crack occurring inside and outside the delaminated area. The difference of natural frequencies between „free mode‟ and „constrained mode‟ increases then decreases as the crack moves from one side of the delaminated region to the other side, peaking at the middle. The analytical results of this study can serve as the benchmark for FEM and other numerical solutions.en
dc.format.extent14 p.en
dc.relation.ispartofseriesStructural engineering and mechanicsen
dc.rights© 2015 Techno-Press. This paper was published in Structural Engineering and Mechanics and is made available as an electronic reprint (preprint) with permission of Techno-Press. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.en
dc.subjectDRNTU::Engineering::Civil engineering::Structures and designen
dc.titleEffects of edge crack on the vibration characteristics of delaminated beamsen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen
dc.description.versionPublished versionen
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