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A consistent interface element formulation for geometrical and material nonlinearities

Paggi, Marco and Reinoso, José A consistent interface element formulation for geometrical and material nonlinearities. Computational Mechanics, 54. pp. 1569-1581. ISSN 0178-7675 (2014)

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Decohesion undergoing large displacements takes place in a wide range of applications. In these problems, interface element formulations for large displacements should be used to accurately deal with coupled material and geometrical nonlinearities. The present work proposes a consistent derivation of a new interface element for large deformation analyses. The resulting compact derivation leads to an operational formulation that enables the accommodation of any order of kinematic interpolation and constitutive behavior of the interface. The derived interface element has been implemented into the finite element codes FEAP and ABAQUS by means of user-defined routines. The interplay between geometrical and material nonlinearities is investigated by considering two different constitutive models for the interface (tension cut-off and polynomial cohesive zone models) and small or finite deformation for the continuum. Numerical examples are proposed to assess the mesh independency of the new interface element and to demonstrate the robustness of the formulation. A comparison with experimental results for peeling confirms the predictive capabilities of the formulation.

Item Type: Article
Identification Number: 10.1007/s00466-014-1077-2
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 13:30
Last Modified: 27 Mar 2017 14:33
URI: http://eprints.imtlucca.it/id/eprint/2545

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