I am not so knowledgeable but I think it can not be reason. Please leave a screen shot when you are saying:" When i check the sphere on contact chec...

Thank you very much dear @negativevolume Soft2 with Depth 5 worked very well. Btw it seems that I didn't have element penetration from the beginni...

Yes @negativevolume , although with elform3 there is no Negative Volume, bending shape seems quite strange as you said. I use "Automatics Surface t...

and it is result of them: See the differences. You can see some element penetration in right pic. 18-El3vsOthers.png

Thank you for your information @negativevolume . I should say that I don't have solid and shell element together. All are solid. However I doubt tha...