Simulate Early, Simulate Often... In Rhino
Now that SNS can analyse meshes, I suppose that it brings us closer to making a "poor man's" non-linear analysis :
-Apply 1/10th (for example) of the load
-Analyse -> deform the mesh
-Apply the next 1/10th of the load on the previously deformed mesh
-...and so on, until all the load has been applied.
Typically, around a hole designed as a bolted fitting, there are huge stress values :
If we strictly limit ourselves to having no areas over plastic limit, the over-engineering on those assembly becomes completely crazy.
Steel building code has verification formulas which allow a certain amount of plasticity to take place, and end up with reasonable thicknesses / hole diameters.
There really should be a way to ease-off these local stresses.
I suggested iterating on deformed shapes because it quickly leads to a slightly plastified geometry which spreads the stress around nicely, but you might come up with other ideas...
Anyway, something should be done so that SNS failure criteria gets closer to that found in building codes, otherwise it can hardly be considered useful in this field.
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