# D12.A.2.5 Von Mises Yield Criterion

Combined effect of axial, bending, horizontal/vertical shear and torsional shear stress is calculated at 13 sections on a member and up to 9 critical points at a section. The worst stress value is checked against yield stress divided by appropriate material factor. The von Mises calculates as:

${\sigma}_{j}=\sqrt{{({\sigma}_{x}+{\sigma}_{by}+{\sigma}_{bz})}^{2}+3{({\tau}_{x}+{\tau}_{y}+{\tau}_{z})}^{2}}\le \frac{{f}_{y}}{{\gamma}_{m}}$