The provided source codes and the tutorials make it easy for practicing engineers and scientists to model diffuse crack propagation in a familiar computational environment. Several examples are provided to explain the advantages and disadvantages of the method. The approach does not need predefined cracks and it can simulate curvilinear fracture paths, branching and even crack coalescence. Cracking ABAQUS/Explicit uses a smeared crack model to represent the discontinuous brittle behavior in concrete. Othwise you are advised to use damage stabilisation criteria and even vicous. The elastic displacement and the fracture problem are decoupled and solved separately as a staggered solution. Abaqus XFEM provides some means to deal with crack problems in a more flexible way. If its value reaches one the material is fully broken, thus both its stiffness and stress are reduced to zero. This video provides the following in regards to performing concrete failure simulations in ABAQUS CAE:- How to setup a drop test in ABAQUS CAE - Defining mat. The phase-field is a scalar variable between 0 and 1 which connects broken and unbroken regions. for modeling concrete and other quasi-brittle materials in all types of structures. The method is based on the rate-independent variational principle of diffuse fracture. Concrete smeared cracking see Defining concrete smeared cracking. In order to model brittle fracture, we have implemented a two and three dimensional phase-field method in the commercial finite element code Abaqus/Standard.
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