The plastic capacity of a profile

A test comparing plastic capacity in welded profiles when analysis with or without welds+ analyzing as simplified shell element.

Profile with welds
Profile without welds
Shell element

Geometry

Profile with welds

Profile without welds

Shell element

Conclusion

Analyzing steel structures from plates/sheet metal with simplified contacts and shell elements does not significantly impact the plastic capacity of a profile. The analysis did fail to converge within a 1.5% load difference compared to each other.

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