How to do hydro forming analysis?

There are two ways to apply pressure, i.e.

a) using *LOAD_MASK

b) using *LOAD_SEGMENT or LOAD_SEGMENT_SET

Note:

a) Only positive pressure can be used

b) The direction of the pressure is in the negative normal direction of the element or segment

c) If you want to change the pressure direction, change the order of the nodes in element or segment cards.