Hi Peter, Thank you for getting back to me, yes, it is attached to the membrane with some sort of adhesive. The only information about this adhesive contact that I have is that it has a peel strength of 50N/m. For now I have used "Bonded" contact between membrane & cuboid. 

For the collision, just want to confirm with you that explicit dynamic is able to do the job. 

For the 1st part when the tape was deflected downwards due to the vacuum source (please refer to my 1st post), the cuboids collided with each other abit as their faces rubbed against each other. However, I was unable to observe the collision in static structural. I was only able to see the frictional stress at the end state as the faces leaned on each other (at end state).