Vacuum Simulation

Hello Simulia community,

Would you have any guidance or methodology, to perform a vacuum simulation on Abaqus? 

Basically, the simulation would consist in having a closed deformable box, meshed with 3D hexahedrons elements. Then vacuum the air inside to reach a pressure of say 1000Pa (0.01bar).

Ideally, I want to keep this vacuum condition for next steps of mechanical load application.

I hope that makes sense,

Thank you!

Regards,

Jimmy