Now showing items 1-5 of 5
Yield loci of anisotropic sheet metals
(Elsevier, 1983)
Four sheet metals, having quite different combinations of R-values and strain-hardening behavior were tested in uniaxial tension, uniaxial (through thickness) compression, balanced biaxial tension (bulge test), and ...
Comments on anisotropic yield criteria
(Elsevier, 1985)
Limitations of several anisotropic yield criteria are discussed. Hill's 1948 criterion overestimates the variation of yield strength with direction, while the specializations of Hill's 1979 theory assume planar isotropy. ...
Convexity restrictions on non-quadratic anisotropic yield criteria
(Elsevier, 1987)
Examination of Hill's 1979 anisotropic yield criterion [Math. Proc. Camb. Phil. Soc. 85, 179 (1979)] shows that for Cases I, II and III, there are combinations of m and R for which the yield loci are outwardly concave or ...
Upper-bound anisotropic yield locus calculations assuming -pencil glide
(Elsevier, 1980)
Deformation by -pencil glide has been analyzed by an upper-bound model which combines a least-shear analysis and Piehler's maximum virtual work analysis. The least-shear analysis gives exact solutions if three slip systems ...
Examination of Hill's latest yield criterion using experimental data for various anisotropic sheet metals
(Elsevier, 1985)
Using experimental data published earlier [Vial et al., Int. J. Mech. Sci. 25, 899 (1983)], values of the exponent m in the Hill (1979) yield criterion [Hill, Math. Proc. Cambridge Phil. Soc. 85, 179 (1979)] are calculated ...