rubber property

[venuti]

I am working on a system using a cylinder of rubber as "fluid" in a jack amplifier
I am looking for pre-designing information on :
- COMPRESSION MODULUS vs SHORE "A" DUROMETER for an "unknown" rubber.
- FRICTION and DAMPING factors

Curves will be wellcomen
Any help would be appreciated.

 

[johnp]

Dunlop or any other vendor can give you typical curves for their elastomer. Be carefull with compression deflection. The stiffness of the block depends on the shape factor - that is what does the perimeter look like.