I have a 43" dia x 1.5" thick disk sitting on top of an 8" dia shaft. I need to figure out how much the disk is going to flex downwards like an umbrella. Specifically the deflection amount on the OD edge. The only calculations I can find are for rupture disks and discs with the OD supported and how much deflection there is in the center. It can't be totally uncommon.
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