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Flat Rectangular Plates. Roarks

Flat Rectangular Plates. Roarks

Flat Rectangular Plates. Roarks

(OP)
I have a steel weldment with a wide top plate that will need to bear some significant load, F. Not sure if I'm okay to calculate my max stress as a simply supported beam, or if I should use Roark's formulas to calculate as a flat rectangular plate (although I would assume the latter). My a/b = .43
I'd appreciate any guidance on which of Roark's cases I should use, and how do I calculate the q value in the formula:

[βq(b^2)]/t^2

Thanks!

RE: Flat Rectangular Plates. Roarks

Either way.
I don't remember if Roark has a load case supported at the corners alone like that or not.
If you treat it as a beam, you also have torsion applied at the center.
I'd probably go with the beam approach there myself.

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