Help!!
I’m not an analyst but like to run simple static checks on my designs using COSMOS/M. I was playing around with “GAP” elements trying to learn, and came up with a problem.
Since Gap elements are only in non-linear I made a simple test case.
Material: steel
Thickness .125
Configuration: 5”h X 7”w X 8”l box resting .25 above a Z section that is 4.5 top flange X 10” vertical flange and 4.5” bottom flange. Bottom flange was held ridged with a load of 500lb placed thru a node on top face of box.
With non-linear solution max stress was 65,304 p.s.i.
Remodeling it so that I could run it without a gap element and just as a static model it produced a max stress of 110,720 p.s.i.
Is this just due to the high loads and the NL solution allows for more bending?
Please advise
jon
I’m not an analyst but like to run simple static checks on my designs using COSMOS/M. I was playing around with “GAP” elements trying to learn, and came up with a problem.
Since Gap elements are only in non-linear I made a simple test case.
Material: steel
Thickness .125
Configuration: 5”h X 7”w X 8”l box resting .25 above a Z section that is 4.5 top flange X 10” vertical flange and 4.5” bottom flange. Bottom flange was held ridged with a load of 500lb placed thru a node on top face of box.
With non-linear solution max stress was 65,304 p.s.i.
Remodeling it so that I could run it without a gap element and just as a static model it produced a max stress of 110,720 p.s.i.
Is this just due to the high loads and the NL solution allows for more bending?
Please advise
jon