Abaqus 6 14 Cracked

4.5.3 A cracking model for concrete and other brittle materials. The material library in Abaqus also includes a constitutive model for concrete based on. Figure 4.5.3–6 Cracking conditions for Mode II cracking (crack opening dependent model). Using Equation 4.5.3–14, these data are then converted to – data for.

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31.3.1 An overview of the extended finite element method (XFEM) You can study the onset and propagation of cracking in quasi-static problems using the extended finite element method (XFEM). XFEM allows you to study crack growth along an arbitrary, solution-dependent path without needing to remesh your model. XFEM is available only for three-dimensional solid and two-dimensional planar models; three-dimensional shell models are not supported. You can use XFEM to study a crack in parts containing geometry, orphan mesh elements, or a combination of the two. You can choose to study a crack that grows arbitrarily through your model or a stationary crack.

You define an XFEM crack in the Interaction module. You can specify the initial location of the crack. Alternatively, you can allow Abaqus to determine the location of the crack during the analysis based on the value of the maximum principal stress or strain calculated in the crack domain. For more information, see. Examples of XFEM models created in Abaqus/CAE are provided in. To perform an XFEM crack analysis, you must specify the following.

To define the initial crack location, you can select faces from a three-dimensional solid or edges from a two-dimensional planar model. The initial crack location must be contained within the crack domain. A selected face can be a face of the solid, a face created by a partition, or a planar part instance. Similarly, a selected edge can be an edge of the solid, an edge created by a partition, or a wire part instance; you should not select a seam crack.

You should not mesh the faces or edges that you selected to define the initial crack location. Shows examples of the crack domain and the crack location for two- and three-dimensional geometry and orphan meshes.