http://en.wikipedia.org/wiki/Bending(adsbygoogle = window.adsbygoogle || []).push({});

Please have a look on the right most picture in "Stress in large bending deformation".

The Stress distribution shows that the bending center is not locate at the middle of the cross-section. (which also happen at connection caculation)

However, base on normal caculation on a beam under bending, the equation used(Stress=M*y/Ixx) is still assuming zero value at crosssection's center line.

I wonder what is their relationship.

Thank you very much in advence.

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# Questions on Bending Stresses (which area will have 0 stress)

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