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Mirror Grinding and Polishing

Mirror Grinding and Polishing

Mirror Grinding and Polishing

(OP)
   I am working on the design of a metal scanning mirror.  From experience, and previous calculations, I know that fabrication is a more complicated requirement than vibration modes and stiffness while scanning.

   I am trying to simulate the grinding process in FEA, using COSMOS.  I have configured the mirror face as a roller/sliding restraint, and I am applying 10N force to the opposite side.  This gives me a stress plot that I am trying to make sense out of.

   Is there some way to estimate how much material is removed for a given normal stress?

   Has anybody analyzed anything like this?

   I am looking for flatnesses within λ/1, which is about 633nm, across a 91x53mm mirror.

    

               JHG

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