Maximum Bending on Multiple plates 1

[fzlo]

Greetings,

I would like to receive guidance in checking bending stress for multiple plates in the same plane.

I have three keeper plates with weak axis bending due to an axial load. If I to were use a plate thickness of less than 1, the section modulus becomes smaller since in weak axis bending, the thickness would be depth of the section I'm using. I am just wondering that if I instead use one plate (which is all three combined) would produce a better result than having three plates spread out. Since the overall thickness would be larger than one, the bending stress I calculate seemed reasonable. Am I understanding this right?

 

[BridgeSmith]

You'd get a slight gain by just stacking the plates, but the effect would be very small, and highly variable, and therefore not easily quantifiable by analysis. If the plates are attached together in a manner that is sufficiently strong and rigid for the plates to act compositely, then the gain is strength and stiffness would be significant.

Rod Smith, P.E., The artist formerly known as HotRod10

 

[desertfox]

Hi fzlo

If you replace the three keeper plates with one plate that is the same thickness as the three that should be much better for dealing with the bending.

“Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein