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A new linear yield criterion, referred to as average apothem (AA) yield criterion is developed in this paper based on the Tresca and Twin Shear Stress (TSS) yield criteria. This criterion is a piecewise linear function and its locus on the π-plane in Haigh Westergaard stress space is an equilateral and non-equiangular dodecagon. Comparison with the Tresca and Mises yield criteria shows that the locus...
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