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Coupled Systems Mechanics Volume 4, Number 3, September 2015 , pages 211-235 DOI: https://doi.org/10.12989/csm.2015.4.3.211 |
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Localized failure in damage dynamics |
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Xuan Nam Do, Adnan Ibrahimbegovic and Delphine Brancherie
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| Abstract | ||
| In this work we present a one-dimensional damage model capable of representing the dynamic fracture for elastodamage bar with combined hardening in fracture process zone - FPZ and softening with embedded strong discontinuities. This model is compared with another one we recently introduced (Do et al. 2015) and it shows a good agreement between two models. Namely, it is indicated that strain-softening leads to a sensitivity of results on the mesh discretization. Strain tends to localization in a single element which is the smallest possible area in the finite element simulations. The strain-softening element in the middle of the bar undergoes intense deformation. Strain increases with increasing mesh refinement. Strain in elements outside the strain-softening element gradually decreases to zero. | ||
| Key Words | ||
| dynamics; fracture process zone – FPZ; strain-softening; localization; finite element; embedded discontinuity | ||
| Address | ||
| Adnan Ibrahimbegovic: Université de Technologie Compiègne / Sorbonne Universités, Laboratoire Roberval de Mécanique Centre de Recherche Royallieu, Rue Personne de Roberval, 60200 Compiègne, France; Chair for Computational Mechanics & IUF, France Xuan Nam Do and Delphine Brancherie:Université de Technologie Compiègne / Sorbonne Universités, Laboratoire Roberval de Mécanique Centre de Recherche Royallieu, Rue Personne de Roberval, 60200 Compiègne, France | ||
