ffd FFD or deltashift Command question

[Graychen 0]

I encountered the following error while using the delta shift command to deform the blade tip.

This can result in geometric errors when exporting deformed geometry and opening it through 3D modeling software such as CATIA. As shown in the following figure

I tried adjusting the MaxChord Height, Angle Tolerance, and Max 3D Edge Length parameters in CAESES, but it did not solve the problem.

How can I solve this problem?

[Mr. Heinrich von Zadow 12]

Hi there,

this looks like you are shifting control points too much (or maybe you are shifting them smoothly but accidentally left out a group of points that is just outside the range thereby folding the polygon in an unwanted manner). Try looking at the control polygon to get a better understanding of what went wrong.

In addition, I highly recommend to update to the latest release. 

Cheers,
Heinrich