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Mirror Grinding and Polishing

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drawoh

Mechanical
Joined
Oct 1, 2002
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8,969
Location
CA
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.



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JHG
 
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