【讨论】help on crack propagation debugging

johnyan

For crack propagation command line like below,
which stress quantity is used to judge the criterion ? i.e. compared to 0.6 ? Nodal stress at integration pt. / averaged node stress / element stress at centroid / element face stress ? For result as below, S22 at integration pt 2 (closest to node 76) of el 75 overides 0.6 already, but no propagation happens yet.
  
*FRACTURE CRITERION, DISTANCE=0, TYPE=CRITICAL STRESS, TOLERANCE=0.05
0.6, 1.e12, 1.e12
  
  E L E M E N T   O U T P U T
  ELEMENT  PT FOOT-       S11         S22         S33         S12      
             NOTE  
  
      75   1         -1.145      0.8023     -0.6857     -0.2000     
      75   2         -1.318       1.336      -1.046      0.9553     
      75   3        -0.7313      0.1478     -0.4447      0.1921     
      75   4        -0.5886      0.1412     -0.5809      0.6987     
  
               CRACK TIP LOCATION AND ASSOCIATED QUANTITIES
  
     CRACK   SLAVE    MASTER    INITIAL   CURRENT   CUMULATIVE    NORMAL      SHEAR
     NUMBER  SURFACE  SURFACE   CRACKTIP  CRACKTIP  INCREMENTAL   FAILURE     FAILURE
                                NODE      NODE      CRACK LENGTH  STRESS      STRESS
  
          1    -37-     -38-          76        76    0.0000       0.60000       1.00000E+12
========================================
Also the standard manual mentions "Crack propagation information will be printed to the data file during the analysis if ......and the current value of the user-specified fracture criterion used"
BUT WHERE is the current value of fracture criterion used ?