
#1
Sep2907, 08:52 AM

P: 3

The young's modulus of a simply supported beam is given as E= (11/768)*(WL^3)/(I*Y)...
where W=Weight of the load L=Length of the beam I=Moment of inertia Y=Deflection Is this true??? 



#2
Sep2907, 12:34 PM

Sci Advisor
P: 5,095

You need to explain the 11/768. I have a suspicion it is for unit conversions. It would be helpful if you explained. You also mention nothing of the force location or type, i.e. concentrated or distributed. There are a lot of beam equations out there for the scenario you describe.




#3
Oct207, 11:14 AM

P: 1,130

Well, it could be. I gotta admit 11/768 is a little strange looking. But, this could be something near 5/386. So, 3 questions?
Is y the MAXIMUM deflection? Where are you measuring y? Where is the load? I don't think I've ever seen the equation rearranged like this in order to determine E. Are you doing an experiment? 


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