FEA - result validation
FEA - result validation
(OP)
Hello Group,
I have a frame 24,000 lbs hung over two jigs aproximately 400" apart. I am trying to analyse the job in ansys and the results I am getting are rediculous (I think). Please see the attached .pdf file to understand the problem better and results from ansys. As the jigs are equally spaced from the frame CG, I am analysing Just one jig. I am applying 24,000/2=12,000 lbs as a remote load at 200" from the load application center. The stresses in the support are very very high. I am using 50 ksi steel plates and 45 ksi tubes. These two jigs are in service for long time and still working good. If stresses in my calculation are correct this jig would have broken first time the frame is hung on it and which is not the case.
Do you think I am doing anything wrong in applying load???
Any suggestions would be great of help.
Thank you all....
I have a frame 24,000 lbs hung over two jigs aproximately 400" apart. I am trying to analyse the job in ansys and the results I am getting are rediculous (I think). Please see the attached .pdf file to understand the problem better and results from ansys. As the jigs are equally spaced from the frame CG, I am analysing Just one jig. I am applying 24,000/2=12,000 lbs as a remote load at 200" from the load application center. The stresses in the support are very very high. I am using 50 ksi steel plates and 45 ksi tubes. These two jigs are in service for long time and still working good. If stresses in my calculation are correct this jig would have broken first time the frame is hung on it and which is not the case.
Do you think I am doing anything wrong in applying load???
Any suggestions would be great of help.
Thank you all....





RE: FEA - result validation
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: FEA - result validation
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: FEA - result validation
RE: FEA - result validation
RE: FEA - result validation
RE: FEA - result validation
Tobalcane
"If you avoid failure, you also avoid success."
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RE: FEA - result validation
RE: FEA - result validation
Quite why in this day and age anyone relies on dodgy symmetry assumptions is a bit of a mystery to me, perhaps his screen isn't wide enough for the full structure.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: FEA - result validation
RE: FEA - result validation
the model pix look like 1/2 of the full frame sketch.
RE: FEA - result validation