Mixed interpolation LBB condition ABAQUS

Dear all,

I am asking your point of view about incompressible material simulation (e.g. rubber material) in ABAQUS.

When the material is incompressible a u/p formulation should be used instead of a displacement based formulation.

According to ABAUS manual one of the element suitable for a 3D incompressible analysis is a C3D8H (8 nodes brick for the displacements and constant pressure) or C3D20H (20 nodes brick for the diaplacements and 4 nodes for the pressure).