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Flat Rectangular Plates. Roarks

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zonaguy920

Mechanical
Apr 16, 2017
10
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!
 
 http://files.engineering.com/getfile.aspx?folder=26aced3b-e153-40b7-96a3-2ee2c763da57&file=diagram.jpg
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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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