- #1
kiteboy
- 12
- 0
Hi
Im am trying to find out a predicted deflection of a steel rectangular beam of uniform cross section (which is 12.7mm wide x 6.4mm deep). The beam is simply supported at both ends and has a span of 660mm. The load is to be placed in the middle of the beam.
I have the formula to be used to work out the deflection for the above case which is
d = C WL^3/EI
C = the constant of 1/48
W = the load
L= the span cubed
E = Youngs Modulus
I = 2nd Moment of Area
Ive worked out the I to be 277
E = 200kN/mm^2
W = 40
L= 0.66 cubed
Tried plugging in these numbers but they not comming out anywhere near the values I was expecting...about 4mm (I think)
Can anybody see anything wrong with what I am entering or any obvious mistakes
Thanks for any advice guys
Im am trying to find out a predicted deflection of a steel rectangular beam of uniform cross section (which is 12.7mm wide x 6.4mm deep). The beam is simply supported at both ends and has a span of 660mm. The load is to be placed in the middle of the beam.
I have the formula to be used to work out the deflection for the above case which is
d = C WL^3/EI
C = the constant of 1/48
W = the load
L= the span cubed
E = Youngs Modulus
I = 2nd Moment of Area
Ive worked out the I to be 277
E = 200kN/mm^2
W = 40
L= 0.66 cubed
Tried plugging in these numbers but they not comming out anywhere near the values I was expecting...about 4mm (I think)
Can anybody see anything wrong with what I am entering or any obvious mistakes
Thanks for any advice guys