how much clamping force is required?

[mune]

Hi, pls see attached pic.

By intuition, the SST plate will deflect downward. Esp when it is not properly clamped, the deflection likely to be larger.

One of the requirements for my project is to keep the deflection below 0.020"; and my question is how to calculate the amount of clamping force required (for keeping the deflection less than 0.020")?

The dimension for the SST plate is: 1.5mm x 2340mm x 232mm

Thanks.

 

[MintJulep]

Impossible.

 

[ChrisConley]

More of a general mechanical problem, but no amount of clamping force will eliminate deflection. The 'beam' in this case will deflect due to the exterior load on it relative to the dimensions of the beam.

This isn't a beam, it's a plate, but beam calculations will still work (just a long flat beam). Thicker plate will reduce deflection, not clamping force. Clamping force should be relative to the difference in forces around the beam (atm pressure x area on one side). The calculation of the lateral forces would depend on the geometry of the connection.

I can't believe I'm still writing... back to boilers, pumps and dewpoint calculations.

 

[ScottI2R]

I am way off my bases here, but can you not use a thicker plate? I was going to suggest machining the plate on the atmosphere side ( getting thicker) but that would serve to increase surface area and thus load. Hmmm, I think I better stick to what I know. Just trying to help.

Scott

I really am a good egg, I'm just a little scrambled!

 

[KiwiMace]

This is a statically indeterminate problem and probably better posted into the mech - other topics forum.