How to make a void in a 3D cube

[Satra03]

I am an MSc Mechanical Engineering student and I need to apply uniaxial compression on a foam cube which contains a void within it. I am having difficulty on creating the void without create a see through hole in the cube. Could somebody outline some steps I could use to achieve my goal. Thank You.

 

[onatirec]

Depending on the foam, one could design it in two parts and "weld" them together.

https://www.youtube.com/watch?v=Asc2w3o6fdE

 

[IRstuff]

What precision and accuracy is required for the void and what kind of foam? A sufficiently loose foam could be everted through a small hole, the new exterior is removed and the structure reverted to its original geometry, resulting in a interior void.

Alternately, some sort of laparoscopic tool could remove material through a small hole for foams that can't be everted.



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[Satra03]

I meant creating it in ABAQUS