Interface debonding models: a viscous regularization with a limited rate dependency - Archive ouverte HAL
Article Dans Une Revue International Journal of Solids and Structures Année : 2001

Interface debonding models: a viscous regularization with a limited rate dependency

Résumé

Interface models have been developed over the past 10 years for simulating various scales of composite debonding e€ects, such as decohesion between matrix and ®bers and delamination in laminates, formulated with and without rate dependencies. We give several examples of how sudden``sudden``solution jumps'' can occur in rate-independent models like the Tvergaard depending on the geometry, interface behavior, and ®nite element discretization. This kind of instability disappears for the often-used viscous models, but the result is a high rate dependency that deviate from experimental trends. A new kind of viscous regularization is proposed here, which applies to the Tvergaard debonding model or modified ones, and has a limited rate dependency. A few simple examples are given, including the delamination of a double cantilever beam, to show the capabilities of the technique proposed.
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Dates et versions

hal-02093693 , version 1 (18-04-2019)

Identifiants

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Jean Louis L Chaboche, Frédéric Feyel, Yann Monerie. Interface debonding models: a viscous regularization with a limited rate dependency. International Journal of Solids and Structures, 2001, 38 (18), pp.3127-3160. ⟨10.1016/S0020-7683(00)00053-6⟩. ⟨hal-02093693⟩

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