The problem of interface decohesion in laminated beams is addressed with refer- ence to the double cantilever beam (DCB) geometry. The paper deals with the analysis of the influence of non-uniform bonding properties or interfacial defects on the crack propagation process and its stability. In spite of the relative simplicity of the considered case study, which is under pure Mode I deformation, a contact problem takes place due to the decohesion. The occurrence of contact makes the problem highly non-linear, since the extension of the contact area is a priori unknown. The finite element method with a generalized interface constitutive law is used to enforce the contact constraint along the interface and to model the progress of the delamination process.
A coupled contact and decohesion analysis of laminated beams / Carpinteri, Alberto; Paggi, Marco; Zavarise, Giorgio - In: Proc. IUTAM Symposium on Computational Methods in Contact Mechanics / P. Wriggers and U. Nackenhorst. - STAMPA. - BERLIN : SPRINGER-VERLAG, 2007. - ISBN 9781402064043. - pp. 147-156
A coupled contact and decohesion analysis of laminated beams
Alberto Carpinteri;Marco Paggi;Giorgio Zavarise
2007
Abstract
The problem of interface decohesion in laminated beams is addressed with refer- ence to the double cantilever beam (DCB) geometry. The paper deals with the analysis of the influence of non-uniform bonding properties or interfacial defects on the crack propagation process and its stability. In spite of the relative simplicity of the considered case study, which is under pure Mode I deformation, a contact problem takes place due to the decohesion. The occurrence of contact makes the problem highly non-linear, since the extension of the contact area is a priori unknown. The finite element method with a generalized interface constitutive law is used to enforce the contact constraint along the interface and to model the progress of the delamination process.Pubblicazioni consigliate
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https://hdl.handle.net/11583/2700644
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