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Shell element at corner

Shell element at corner

Shell element at corner

(OP)
Dear Sirs,

Does shell elements results are correct at corners? For instance at junction of two pipes.

RE: Shell element at corner

Stress isn't. You won't have specified the shape of any fillet/etc so it can't know the stress concentration factor. The shell elements might also assume a plane stress state which isn't valid at a corner.





RE: Shell element at corner

It depends on what you want from the results and how you're going to assess them. There won't be a stress concentration effect from a fillet radius but then that stress contribution would be classed as a peak stress component used in fatigue assessment. If it's a non fatigue assessment then the stresses at the corner would be classed as a secondary stress component with shell elements. Refer to a design standard code for definitions.

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