A coupled damage-viscoplasticity model for concrete fracture

L.J. Sluys (Faculty of Civil Engineering and Geosciences, Delft University of Technology, The Netherlands) J.F.Georgin, W. Nechnech & J.M. Reynouard (URGC-Structures, Insitut National des Sciences Appliquées de Lyon, France)

A coupled damage-viscoplasticity model has been developed in order to overcome shortcomings of the viscoplastic model in simulating the failure process of softening materials. The coupled model improves the fracture modeling since a stress-free crack can be simulated which grows from a localization zone of finite width into a macro-crack. This is demonstrated by means of an analytical and computational study.

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