algorithmic modeling for Rhino
When calculating the utilization and the von mises stress of shell elements, I noticed something strange.
When multiplying the maximum utilization output with the material's yield strength, the maximum occuring von mises stress should be equal right?
But the value for the von mises stress is different (factor of about 0.9) (see picture).
Is there a factor included in the utilization calculation or do I have a different problem in the file?
by taking the length of the stress vector you loose the negative sign of the possibly negative second principal stress. This could be the reason for the difference.