Young's modulus times second moment of area (1 Viewer)

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Good day,

Im am wondering what you get when you determine the following of a bar during a bending experiment:

(E x I) / y

E = the Young's Modulus [kgf/mm^2]
I = Second moment of area [mm^4]
y = half of the bar height [mm]

Is there a name for this term? And what does this term represent?

Thanks in advance!
 

Mapes

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The reciprocal of this term is the magnitude of the normal strain at the surface per unit bending moment (because [itex]|\sigma_{\rm{max}}|=My/EI[/itex]). EI alone is called the flexural rigidity.
 
Allright, thanks a lot.

Then I have got one question left:

In the formula:
(M/I) = (E/R)

What does "R" represent?
 

Mapes

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The radius of curvature of the bending beam.
 

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