Welded node of SHS 60 and SHS 40 members

Welded node of SHS 60 and SHS 40 members

Light square hollow sections meet from several directions in a fully welded node. The welds govern at 80 % of capacity.

Connection library · Hollow section joints

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From a real projectAISC 360-16Checked: all components OK
Welded node of SHS 60 and SHS 40 members: overall check of the finite element model

The 3D model is the connection as it was checked: members, plates, welds and bolts. Drag to rotate, scroll or pinch to zoom, tap a part type to hide it.

Members
SHS 60×60×3 (S235), SHS 40×40×3 (S235)
Welds
fillet, throat 3–4.2 mm
Design code
AISC 360-16
Method
Component-based finite element model (CBFEM)
Plates (plastic strain)0.1 / 5 %
Welds80 / 100 %
Welded node of SHS 60 and SHS 40 members: equivalent stress in the plates and members
Equivalent stress under the governing load case.
Welded node of SHS 60 and SHS 40 members: overall check with plastic strain
Overall check: plastic strain and component status.

How it was checked

Every plate, bolt and weld in one model

The joint is modelled with shell elements for the plates and member ends, and with nonlinear springs for bolts, welds and anchors (the component-based finite element method). The member forces are applied at the member ends and the model is loaded step by step to the full design load.

Plates pass when the plastic strain stays below the limit of the code; bolts, welds and anchors are checked against the component resistances of AISC 360-16. The bars above show each component’s utilisation for the governing load case.

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