As I understand, you are looking for guidance on modeling a pneumatic system using Simscape. The following example might be useful, as it models a pneumatic actuator system with components from the "Foundational Library Gas":
For simulating the specific behavior of materials, this is not available out of the box. However, you can adjust the specific properties of the elements used in the pneumatic simulation. Here is a list of elements from the "Foundational Library Gas" for more information:
It is also possible to directly import models from CAD into Simscape Multibody and then connect them to a pneumatic system. To perform this refer to this link on connecting a Simscape network to Simscape Multibody:
Also, here is a useful answer for importing a pump model:
I hope this helps!
