To include the singularity in your contour integral estimates, click the Singularity tab in the Crack editor and choose the desired position of the midside node and degenerate element control. For detailed instructions, see Controlling the singularity at the crack tip. In addition, you must do the following in the Mesh module:
When you mesh the crack front, Abaqus does the following:
A part instance that includes orphan mesh elements is always a dependent instance. As a result, you cannot adjust the midside nodes of these instances in the assembly. For more information, see What is the difference between editing an orphan mesh, a meshed part, and a meshed part instance in the assembly?. You must display the original orphan mesh and use the Edit Mesh toolset to adjust the position of the midsize nodes. For more information, see Adjusting the position of midside nodes. In addition, you cannot create collapsed elements from triangular and wedge elements of an orphan mesh. |