Modelling Compression of Material at a Rate

Hello,

I am a beginner to COMSOL 4.2a and I would like to build a simple model where a material (a cylindrical block of polymer) is compressed at a rate of 10 mm/min.

Using Solid Mechanics, I was able to construct the cylinder and apply a boundary load. However, this is just an instantaneous load.

My question is how do I go about implementing a compression of the material at a rate of 10mm/min?

Thanks for your help!

-Adrian