same behavior from different materials

Hello everyone,

I have a simple question, i defined an object on ABAQUS which i applied a uniform pressure on its surface then i kept changing the elasticity of the material(Young and poisson coefficient) (from concrete.. to steel.. to wood..) for comparison

I'm always getting the same response and behavior, the same displacements after simulation

could someone help clarify why i am getting the same behaviors? knowing that displacements depend on the elasticity parameters of each material

thank you in advance,

best regards

Elie Ahmar