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Communication Dans Un Congrès Année : 2009

A thick level-set approach to damage mechanics

Résumé

In this paper, we present a model for damage evolution in solids. It is well know that fracture mechanics alone, despite all the advances in numerical techniques to represent cracks, can not represent easily the initiation process or the change of topology in the crack shape. To model properly such phenomena, damage mechanics models are more adapted. But damage model have their own weaknesses. Damage models are usually written locally for a given material, which cause well known spurious numerical localization and force the use of complex techniques, be it averaging the local material law over a region or using second gradient models. Those techniques are numerically expensive and difficult to implement. Lot of questions are still open concerning for e.g boundary conditions or transition to rupture and crack localization when damage tends to one. Recently, new type of descriptions appeared, that we see as means to bridge the gap between damage and fracture.
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Dates et versions

hal-01007816 , version 1 (13-06-2019)

Identifiants

  • HAL Id : hal-01007816 , version 1

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Nicolas Moes, Claude Stolz, Nicolas Chevaugeon. A thick level-set approach to damage mechanics. 4th Symposium on defect and material mechancis, 2009, Trento, Italy. ⟨hal-01007816⟩
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