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How to define surface roughness for motion simulation

Question asked by Valerie Pfening on Apr 10, 2013
Latest reply on Apr 10, 2013 by Josh Brady

Hi all,


my question is how to define the surface roughness. I have a cylinder liner where a piston (with piston rings) is moving up and down.

Cylinder liners have a honed surface (Ra 4 - 8 µm). I have three different honing types and I want to identify the friction force with the motion simulation.

I really do not know how to define the roughness of the surface.