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Coupled Systems Mechanics
  Volume 4, Number 3, September 2015, pages 211-235
DOI: http://dx.doi.org/10.12989/csm.2015.4.3.211
 


Localized failure in damage dynamics
Xuan Nam Do, Adnan Ibrahimbegovic and Delphine Brancherie

 
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

 

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