Checking the Damage

For shell models, it is important to check damage at the top and bottom faces of the shell.

1. Right-click the TopFace study tab and click Copy Study.
2. In the PropertyManager:
   1. Enter BottomFace for the study name.
   2. Click .
3. In the BottomFace study tree, right-click BottomFace and click Properties.
4. In the dialog box, set the Shell face to Bottom and click OK.
5. Run the BottomFace study.
   The Damage plot is displayed.

   

   The plot shows that the maximum damage factor is 0.36%.

   The static studies are solved based on small displacements assumption. To evaluate the accuracy of the results, check the Large displacement flag for all static studies and rerun the fatigue studies. The difference between the damage plot results is minor.

   No interaction was assumed between fatigue events. If events can occur simultaneously in a random way, you can activate the Random interaction option in the Properties of the Fatigue studies and run them again. The damage is higher than that caused by No interaction.