How much force to hold down a steel sheet?
How much force to hold down a steel sheet?
(OP)
I have a process where an uncoiled steel strip travels down a conveyor line. The strip width varies (30~80") as well as the thickness (.25~.625"). The strip has some natural waviness to it, so it does not always rest perfectly flat against the conveyor line.
There is one point on the line where I need to hold the strip flat against the conveyor using a cylindrical roller on top of the strip across its width. The roller does not need to permanently deform the strip to lay flat. A temporary elastic deformation will suffice.
Is there any way to calculate how much force the roller needs to apply to the strip to hold it flat momentarily? I'm thinking that it will involve the modulus of rigidity, but I want to get the opinion of more learned men than I before proceeding.
There is one point on the line where I need to hold the strip flat against the conveyor using a cylindrical roller on top of the strip across its width. The roller does not need to permanently deform the strip to lay flat. A temporary elastic deformation will suffice.
Is there any way to calculate how much force the roller needs to apply to the strip to hold it flat momentarily? I'm thinking that it will involve the modulus of rigidity, but I want to get the opinion of more learned men than I before proceeding.





RE: How much force to hold down a steel sheet?
delta = (PL^3)/(48EI)
Where:
delta = Deflection
P = Load
E = Modulus of Elasticity (Young's Modulus)
I = Moment of Inertia (width.thickness^3/12
corus
RE: How much force to hold down a steel sheet?
The force will not be all that much if you just want to temporarily level it. The 5/8'' might be a bit tough - especially if stainless or other type material
RE: How much force to hold down a steel sheet?
Then you can apply the deformation formulas above using a deflection equal to the maximum delta of the strip between the rollers and the beam distance equal to the separation distance of the rollers.
RE: How much force to hold down a steel sheet?
corus