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Article Dans Une Revue European Journal of Environmental and Civil Engineering Année : 2010

Non local damage model Boundary and evolving boundary effects

Résumé

The present contribution aims at providing a closer insight on boundary effects in non local damage modelling. From micromechanics, we show that on a boundary interaction stress components normal to the surface should vanish. These interaction stresses are at the origin of non locality and therefore the material response of points located on the boundary should be partially local. Then, we discuss a tentative modification of the classical non local damage model aimed at accounting for this effect due to existing boundaries and also boundaries that arise from crack propagation. One-dimensional computations show that the profiles of damage are quite different compared to those obtained with the original formulation. The region in which damage is equal to 1 is small. The modified model performs better at complete failure, with a consistent description of discontinuity of the displacement field after failure.
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Dates et versions

hal-00683271 , version 1 (20-06-2019)

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Gilles Pijaudier-Cabot, Frédéric Dufour. Non local damage model Boundary and evolving boundary effects. European Journal of Environmental and Civil Engineering, 2010, 14 (1-10), pp.729-749. ⟨10.1080/19648189.2010.9693260⟩. ⟨hal-00683271⟩

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