Constitutive analysis of pressure-insensitive metals under axisymmetric tensile loading: A stress triaxiality-dependent plasticity damage model

113A new constitutive model of σeq(p)=(1−D¯f(η)〈lnp−lnpth〉lnɛf−lnpth)σy(p,η0)[1−(η−η0)]f(η)0.5 To reveal mechanisms in pressure-insensitive metals