pressione variabile

good morning, pressing a package of partially compressible materials (more felt net), at a constant static pressure of 2600kg (automatic press) you get the same result if we press the package with different cycles reaching a maximum pressure 2600kg ( manual press, reached the maximum pressure...

hello to all:) are struggling with structural analysis on a convergent-divergent conduit. Can someone suggest me how to apply a variable pressure inside it, knowing only the values at the entrance, in the throat section and at the exit? Do you recommend using lbc fileds? thanks to alliiii:)