Quasistatic delamination problem |
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Authors: | Tomáš Roubíček Lucia Scardia Chiara Zanini |
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Institution: | (1) Mathematical Institute, Charles University, Sokolovská 83, 186 75 Prague 8, Czech Republic;(2) Institute of Thermomechanics of the ASCR, Dolejškova 5, 182 00 Prague 8, Czech Republic;(3) Institute for Applied Mathematics, University of Bonn, Endenicher Allee 60, 53115 Bonn, Germany;(4) Dipartimento di Matematica e Informatica, Università di Udine, via delle Scienze 206, 33100 Udine, Italy |
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Abstract: | We study delamination of two elastic bodies glued together by an adhesive that can undergo a unidirectional inelastic rate-independent
process. The quasistatic delamination process is thus activated by time-dependent external loadings, realized through body
forces and displacements prescribed on parts of the boundary. The novelty of this work consists in considering the glue as
infinitesimally thin and ideally rigid in the sense that a crack in the glue cannot be seen before, speaking “microscopically”,
all macromolecular links of the adhesive are fully debonded. The concept of energetic solution is applied and existence of
such solutions is proved by showing Γ-convergence of a suitable approximation that, in addition, allows for a direct computer
implementation, unlike the original problem.
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Keywords: | Delamination Debonding Rate-independent processes Energetic formulation Γ -convergence |
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