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How is calculated "bearing stress" for CWELD element?
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For a CWELD element, the bearing stress is calculated as the transmitted force divided by the effective projected contact area.
General formula:
Where:
If the weld nugget is assumed circular:
Where d is the weld diameter.
In sheet metal applications, bearing area is sometimes taken as:
Where t is the sheet thickness.
The exact area definition depends on modeling assumptions and the solver used (e.g., Altair OptiStruct or MSC Nastran).
In summary: Bearing stress is not directly output by the solver for CWELD; it must be calculated manually from the weld force results.
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