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validity limit for elastic deflection equation due to simple bending

validity limit for elastic deflection equation due to simple bending

validity limit for elastic deflection equation due to simple bending

(OP)
Hi all,

I would like to know if the elastic deflection equation for transverse bending loadings : dy^2/dx^2=Mf(x)/EI is valid for any beam dimensions.
The Beer Handbook Mechanics of Materials says it is valid for any cross section. However, is it valid for thin-walled beams? Dimensions like L=1 m , h=0.3 m, b=0.2 m and t=0.002 loaded with a concentrated load at midspan??? I could not find this information anywhere. I looked for it on a lot of books I have.

Thanks,
Best regards,
Mark

RE: validity limit for elastic deflection equation due to simple bending

my guess is that the cross section being 300x200 means that a 1000mm long beam doesn't fit that well for use of beam theory as it is too short (not slender enough)

http://en.wikipedia.org/wiki/Bending

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