[ChellBells]

Hi all,
I am attempting to model an artery under internal pressure in ANSYS APDL.. This is my current attempt..
select solid 8 node 183 element type (and specify thickness)
select 5 parameter Mooney-Rivlin (for which I have constants)
create quarter area model dimensions
map mesh with quad area elements
Apply symmetry Boundary Conditions to artery inner cut lines
Apply pressure load on internal area line
Activate large deformation (NLGEOM,ON)
Solve using static analysis
This approach works fine for linear-elastic materials, but I cannot understand why it yields no results in this situation????
ANY ADVICE?? Thanks in advance