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On max mises stress and plastic strain

On max mises stress and plastic strain

On max mises stress and plastic strain

(OP)


It is considered in the example

http://www.abaqus.com/solutions/tb_pdf/TB-06-SLOPE-1.pdfI

that the ratio of the Mises stress at a point to the maximum Mises stress that can be generated at the existing pressure  (called DP= Yield Factor) will reach 1 when the material point undergoes yielding (plastic behavior);i.e. equivalent plastic strain (PEEQ) > 0 . I do not think this is the a right failure measure for strain hardening soils in which plastic strain will appear when DP < 1 (no failure yet). Do you agree with me.?

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