Calculating Max Gap with Flatness?

[dummiboi]

Hi,

I'm reviewing a report where they are trying to determine the max gap between two plates in contact.

They use the equation (F1 + F2)/2 = Maxgap. Where, F1 and F2 are the flatness of the two plates.

Does this make sense to anyone? Do things change if there is a force pressing these two plates together?

I would think that the max gap equals the sum of the two flatnesses, and not the average.

Thanks,
Dummi

 

[ShaggyPE]

I agree with you. The max gap would be the sum of the flatnesses. If there is a force pressing the two together... all bets are off. Now we are talking a material stress, deflection issue.

-Dustin
Professional Engineer
Certified SolidWorks Professional
Certified COSMOSWorks Designer Specialist
Certified SolidWorks Advanced Sheet Metal Specialist