Archive for Rational Mechanics and Analysis

, Volume 216, Issue 3, pp 813–879 | Cite as

Γ-convergence Approximation of Fracture and Cavitation in Nonlinear Elasticity

  • Duvan Henao
  • Carlos Mora-Corral
  • Xianmin Xu


Our starting point is a variational model in nonlinear elasticity that allows for cavitation and fracture that was introduced by Henao and Mora-Corral (Arch Rational Mech Anal 197:619–655, 2010). The total energy to minimize is the sum of the elastic energy plus the energy produced by crack and surface formation. It is a free discontinuity problem, since the crack set and the set of new surface are unknowns of the problem. The expression of the functional involves a volume integral and two surface integrals, and this fact makes the problem numerically intractable. In this paper we propose an approximation (in the sense of Γ-convergence) by functionals involving only volume integrals, which makes a numerical approximation by finite elements feasible. This approximation has some similarities to the Modica–Mortola approximation of the perimeter and the Ambrosio–Tortorelli approximation of the Mumford–Shah functional, but with the added difficulties typical of nonlinear elasticity, in which the deformation is assumed to be one-to-one and orientation-preserving.


Cavitation Lipschitz Domain Measurable Subset Nonlinear Elasticity Mind Equation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Faculty of MathematicsPontificia Universidad Católica de ChileSantiagoChile
  2. 2.Department of Mathematics, Faculty of SciencesUniversidad Autónoma de MadridMadridSpain
  3. 3.LSEC, Institute of Computational Mathematics and Scientific/Engineering ComputingNCMIS, Chinese Academy of SciencesBeijingChina

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