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I am new to this type of material and am hoping that someone may be able to assist me.

In short I am putting a cantilever beam under test to determine its bending moment and stiffness (K value) in order to get a strain reading that can be related to an exact model in solid works.

The cantilever beam is 0.26m long and a weight is applied at 0.25m. It is obviously hinged at one end and has a point load of 4.9N (at 0.25m).

I have calculated a bending moment of 1.225x10-3 by summing -(0.0049)(0.25). I believe this is right?

From this I am trying to determine strain behaviour via M/I=Sigma/y

I have calculated I from bh3/12 as it is a rectangle giving me 43.94x10 6. Again I believe this is correct?

For the stress I assume I simply put the 4.9N that I applied? And I am unsure on how to calculate y?

Also how do i determine the K value from this?

It may also be worth mentioning that I have used a DTI to calculate a deflection of .11mm under loading

I appreciate any help, I am new to all of this and appreciate your patience

cheers,

Jason

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# Cantilever beam deflection

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