FEA of hydraulic press frame

[BoomerSooner7]

I am designing a frame for a 15-ton hydraulic ram to remove bearings from a shaft. I went this route so the operator could load the parts easily. Attached is a .jpg of the frame. The ram (not shown) will have a front flange mounted on top of the top plate. There will be a clearance hole (not shown) for the cylinder to pass through to the shaft. My question is: to accurately model the stress and deflection of the frame under maximum load conditions (30,000 lbf.), would I apply a force of 30,000 lbf. to the bottom plate and an equal but opposite force to the top plate, or would it be 15,000 lbf. in both directions? Any help would be greatly appreciated.

 

[GregLocock]

I talked to Isaac and he says 30000

Cheers

Greg Locock

SIGlease see FAQ731-376 for tips on how to make the best use of Eng-Tips.

 

[ZillionM]

thats rite. You see, the only difference between the 2 opposite directed forces is gravity
when you pushing with 300000 lbf
30000 lbf go up and 30000 lbf + gravity go down

btw. I love fkin up pictures