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Stiffness variables

Stiffness variables

Stiffness variables

(OP)
Hi all

This might be a very stupid or odd question.

I'm doing an analysis on a detail that has steel and rubber included. Now the steels stiffness is "easy" but the rubbers stiffness is more complicated.

I need a module of elasticity and have a hardness (in unit shore). Is there any way I can translate 70 shore to xxx MPa?

Regards

Thomas

RE: Stiffness variables

We do this often in bridge modeling where we use elastomeric bearings to support bridge girders.  I would back-calculate a modulas of elasticity that gives you a specified force at a predetermined deflection.  Using that E should then produce answers as if your material were linearly elastic.  You just need to make sure the loads never fail the material which would cause a non-linear stress-strain diagram.  Good Luck

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