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Nonlinear fracture dynamics of laminates with finite thickness adhesives

Corrado, Mauro and Paggi, Marco Nonlinear fracture dynamics of laminates with finite thickness adhesives. Mechanics of Materials, 80B. pp. 183-192. ISSN 0167-6636 (2015)

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Finite thickness interfaces, such as structural adhesives, are often simplified from the modeling point of view by introducing ideal cohesive zone models that do not take into account the finite thickness properties in the evaluation of the interface stiffness and inertia. In the present work, the nonlinear dynamic response of those layered systems is numerically investigated according to the finite element method. The weak form of the dynamic equilibrium is written by including not only the contribution of cohesive interfaces related to the virtual work exerted by the cohesive tractions for the corresponding relative displacements, but also considering the work done by the dynamic forces of the finite thickness interfaces resulting from their inertia properties. A fully implicit solution scheme both in space and in time is exploited and the numerical results for the double cantilever beam test show that the role of finite thickness properties is not negligible as far as the crack growth kinetics and the dynamic strength increase factor are concerned.

Item Type: Article
Identification Number: 10.1016/j.mechmat.2014.07.012
Projects: ERC Starting Grant CA2PVM
Funders: European Research Council
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Research Area: Computer Science and Applications
Depositing User: Prof Marco Paggi
Date Deposited: 28 Jan 2015 13:31
Last Modified: 28 Jan 2015 13:31
URI: http://eprints.imtlucca.it/id/eprint/2546

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