Frame Deflection
Frame Deflection
(OP)
Can someone help me check a solution?
I have got a frame 10 ft high and 10 ft long. I have a UDL on one side @ 400 lb/ft. Icol = 200 in^4, same for Ibeam. One side is pinned, other side a roller.
I calculated a deflection of 0.2 inches?? Does this sound correct using a standard drift equation.
Also If I place a UDL on the beam of 400 lb/ft how will this affect the deflection?
I am grateful if some of the experts in structural online can help.
How would the deflection change if both ends were fixed? What equation can I use?
NOTE: I am looking for a simplified solution and set of equations I might use.
Thank you for helping me with the above problem.
I have got a frame 10 ft high and 10 ft long. I have a UDL on one side @ 400 lb/ft. Icol = 200 in^4, same for Ibeam. One side is pinned, other side a roller.
I calculated a deflection of 0.2 inches?? Does this sound correct using a standard drift equation.
Also If I place a UDL on the beam of 400 lb/ft how will this affect the deflection?
I am grateful if some of the experts in structural online can help.
How would the deflection change if both ends were fixed? What equation can I use?
NOTE: I am looking for a simplified solution and set of equations I might use.
Thank you for helping me with the above problem.






RE: Frame Deflection
RE: Frame Deflection
What do you get with two pins?, and two fixed ends? (as an independent check)
I'm using a formula developed by Rudolf Budeski - Modern Engineering Interchange.
Would you know how to incorporate loads on the Beam into the drift.
Thank you.
RE: Frame Deflection
RE: Frame Deflection
So it appears the simplified equation is OK.
Can you , or anyone else suggest how to incorporate a UDL on the beam into the deflection.
Thx again
RE: Frame Deflection
RE: Frame Deflection
I don't have a copy of the code here with me.
Can you illustrate the calculation using an amplification factor. Assume 400 lbs/ft and one point load at center = 2 kips (as an example).
Can you show this with the deflection with 2 pins?
Thank you so much.
RE: Frame Deflection
U2 = 1/(1 - (Cf*delta)/(Vf*h))
For your case:
U2 = 1/(1 - (6kip*0.174in)/(4kip*5ft)) = 1.004
Multiply deflection by U2 to get deflection accounting for P-delta
RE: Frame Deflection
RE: Frame Deflection
Your help was much appreciated.
Any other comments from other would be most welcome as well.
Thx again.
RE: Frame Deflection
I think so...but I'm just bored at work.
RE: Frame Deflection
No this is not a school project.
RE: Frame Deflection
I'm at work too.....
Can you add anything further to the discussion? Greatly appreciated.
Thx