Abstract
Publisher Summary This chapter presents the use of a new yield criterion (in a transversally isotropic version) introduced by Hill in 1993 in the M-K model. The influence of different material parameters upon Forming Limit Diagrams (FLD's) is studied. The influence of the yield curve shape upon FLD's is analyzed by using the parameter a (expressed as the ratio of the uniaxial yield stress and biaxial yield stress). The mathematical model presented in this chapter has a broad generality, which allows the analysis of the influence of several material parameters upon FLD's. The chapter shows the influence of the strain-hardening coefficient upon the FLD's. One may notice an increase of the limit strains when the coefficient is raised. This fact is in good agreement with the experimental and theoretical results presented in the chapter.
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