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The plastic flow direction was also measured and is consistent the hypothesis of a normality flow rule that is used in the model.
A phenomenological elastic viscoplastic material model is applied, using an anisotropic yield criterion, and in each case analyzed the effect of non-normality is compared with results for the standard normality flow rule.
A phenomenological elastic viscoplastic material model is applied, using one of two different anisotropic yield criteria to account for the plastic anisotropy, and in each case the effect of the normality flow rule is compared with the effect of non-normality.
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The non-normality flow behavior becomes more pronounced as the in-plane orientation angle increases.
It is found that the steady-state fracture toughness is significantly reduced when the non-normality flow rule is used.
Furthermore, it is shown that the predictions are quite sensitive to the value of the maximum angle of deviation from normality in the non-normality flow rule.
The experimental results suggest non-normality plastic flow based on the yield criterion.
A plasticity model with a non-normality plastic flow rule is used to analyze crack growth along an interface between a solid with plastic anisotropy and an elastic substrate.
In addition, the experimental results indicate that the non-normality plastic flow behavior of honeycomb specimens under non-proportional combined loads is consistent with that under proportional combined loads.
The bipotential approach, based on a possible generalization of Fenchel's inequality, allows the recovery of the flow rule normality in a weak form of an implicit relation.
It is further assumed that the kinetic evolution of any specific micro-structural rearrangement may be fully determined by the thermodynamic forces associated with that micro-structural rearrangement, by normality relations via a flow potential.
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CEO of Professional Science Editing for Scientists @ prosciediting.com