/ANIM/SHELL/FLDF

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1. For a BATOZ shell element (I_shell=12), the value is the average value of the Gauss points in the layer.
2. The values of FLD damage factor is equal to the ratio of the actual major principal strain value over the forming limit curve value:(1)
   $$FLDF=\frac{{\epsilon }_{major}}{{\epsilon }_{\lim }}$$

   Where, ${\epsilon }_{\lim }$ is the major principal strain at failure limit from FLD (fct_ID in /FAIL/FLD).

   The FLDF compares the ${\epsilon }_{major}$ and ${\epsilon }_{\lim }$ using the same ${\epsilon }_{minor}$ .

   
   
   Figure 1.

   FLDF may be greater than 1 if the option /FAIL/FLD, I_{fail_sh} =4 is used. In this case, the damage factor is only calculated for post-processing and no elements are deleted.