Buckling Stress Concentration
Buckling Stress Concentration
(OP)
We are working on a steel girder where we want to cut a void in the web, and replace the portion with a new plate. The hole is next to the bearing stiffener. When running the model in STAAD, we get a high buckling stress concentration, right at the top corner of the void. Effectively, in two 1" elements, the stress dissipates to tolerable levels. The only way to reduce this concentration is to put a horizontal stiffener plate at the top of the cut. Is there any way to ignore the high stress concentration in the analysis, and state that the system is stable? If not, is there any other remedy that could reduce the stress right at this point?
Thanks for any information.
Thanks for any information.






RE: Buckling Stress Concentration
RE: Buckling Stress Concentration
RE: Buckling Stress Concentration
RE: Buckling Stress Concentration
Regards,

Qshake
Eng-Tips Forums:Real Solutions for Real Problems Really Quick.
RE: Buckling Stress Concentration
corus
RE: Buckling Stress Concentration
I agree with your comments on the compressive nature. And as the situation would have it with a hole near a bearing stiffener most certainly meets the criteria for near a weld as the stiffener is welded to the web of the plate girder. Since this is one of the main support areas for the girder it is not a trivial matter.
Regards,

Qshake
Eng-Tips Forums:Real Solutions for Real Problems Really Quick.