**process cto#

Description#

This post-processing computes the crack tip opening angle CTOA, and the crack tip opening displacement CTOD for one or several crack fronts.

../../_images/cto.png

Syntax#

**process cto \(~\,\) *compute_ctoa \(~\,\) *compute_ctod \(~\,\) *dist d [ *nbnodes nbnodes ] [ *crack_front crack_front ] [ *lip_name lip_name ]

*compute_ctoa

to compute Crack Tip Opening Angle

*compute_ctod

to compute Crack Tip Opening Displacement

*dist d

distance behind crack front w.r.t CTOD/CTOA is calculated

*nbnodes nbnodes

The number of discretization points on which the CTOD/CTOA is computed. By default 3.

*crack_front crack_front

The prefix of bsets’ names representing the crack fronts. By default FRONT.

*lip_name lip_name

The name of the bset representing the crack lip SIDE0

Example#

 ****post_processing
  ***data_source Z7
   **open cracked_SIF.ut
   **write_geo
  ***global_post_processing
   **deformed
   **file node
   **nset ALL
   **process cto
    *compute_ctoa
    *compute_ctod
    *dist 1.0
    *nbnodes 5
    *lip_name SIDE0
****return