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GrowCrackArc Command

The GrowCrackArc command is used when defining cracks in an MPM problem.

GrowCrackArc (x1),(y1),(x2),(y2),(segs),(ang1),(ang2),<(mat)>,<(tract)>

where

Because the control points for the arc are the boundaries of the oval's rectangle and not the starting and ending points of the resulting arc, linking arcs with points and lines may cause jumps in the crack geometry. If these jumps are not correct, you can precede or follow the arc with GrowCrack commands (or the NewCrack command if the GrowCrackArc command is the first crack shape) having their points as the starting or ending point of the resulting arc.

Notes

  1. The crack tip material ID should specify the initial material. The calculations will automatically update the crack tip material ID if the crack propagates into a new material.
  2. The GrowCrackArc command is only allowed for MPM analyses.