The use of displacement discontinuities in a rate-dependent medium. Simone, A. & Sluys, L. J. Computer Methods in Applied Mechanics and Engineering, 193(27--29):3015--3033, 2004. Special issue on "Computational Failure Mechanics for Geomaterials" edited by R.I. Borja
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This paper illustrates the use of displacement discontinuities in a rate-dependent elastoplastic-damage model. Rate-dependency is considered in the framework of Perzyna viscoplasticity. Displacement discontinuities are incorporated using the partition of unity property of finite-element shape functions. A combined continuous-discontinuous approach is proposed in which a discontinuity is only inserted after a certain amount of damage. Various examples illustrate the applicability of the combined approach to granular and quasi-brittle materials with and without fibre-reinforcement.
@article{ Simone:Viscopum2004,
  author = {A. Simone and L. J. Sluys},
  title = {The use of displacement discontinuities in a rate-dependent medium},
  journal = {Computer Methods in Applied Mechanics and Engineering},
  year = {2004},
  volume = {193},
  number = {27--29},
  pages = {3015--3033},
  note = {Special issue on {"Computational Failure Mechanics for Geomaterials"} edited by R.I. Borja},
  kind = {journal paper (ISI)},
  doi = {http://dx.doi.org/10.1016/j.cma.2003.08.006},
  pdf = {J6 - The use of displacement discontinuities in a rate-dependent medium -- Simone, Sluys - cmame -
		  2004.pdf},
  abstract = {This paper illustrates the use of displacement discontinuities in a rate-dependent
		  elastoplastic-damage model. Rate-dependency is considered in the framework of Perzyna viscoplasticity.
		  Displacement discontinuities are incorporated using the partition of unity property of finite-element
		  shape functions. A combined continuous-discontinuous approach is proposed in which a discontinuity is
		  only inserted after a certain amount of damage. Various examples illustrate the applicability of the
		  combined approach to granular and quasi-brittle materials with and without fibre-reinforcement.}
}

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