From Damage to Fracture, a Modelization Based on Moving Discontinuities and Layers

Abstract:

A damage modelization is proposed based on a continuous transition from undamaged to damaged material. The evolution of damage is associated with a moving layer of finite thickness $l_c$, then initiation and propagation of damage can be unified in the same constitutive law. The driving force associated to the layer motion is a generalized release rate of energy. Using a normality rule based on this force the solution of the rate boundary value problem of propagation and displacement satisfies a variational inequation. Applications of the model are proposed.

• Periodical: Applied Mechanics and Materials (Volume 784)
• Pages: 325-333
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.784.325
• Online since: August 2015
• Authors: Claude Stolz*
• Keywords: Damage, Level-Set, Moving Interface, Moving Layer, XFEM

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