Upper-bound anisotropic yield locus calculations assuming 〈111〉-pencil glide
Roger W Logan,William F. Hosford +1 more
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TLDR
In this paper, an upper-bound model which combines a least-shear analysis and Piehler's maximum virtual work analysis was proposed to determine axisymmetric deformation.About:
This article is published in International Journal of Mechanical Sciences.The article was published on 1980-01-01 and is currently open access. It has received 373 citations till now. The article focuses on the topics: Rotational symmetry & Yield (engineering).read more
Citations
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On the Crystallographic Basis of Yield Criteria
TL;DR: In this article, Continuum anisotropic yield criteria have been developed to simulate the results of calculations based on the crystallographic nature of slip, which describe actual forming behavior better than the quadratic yield criterion postulated by Hill.
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Plastic anisotropy and ductile fracture of bake-hardened AA6013 aluminum sheet
TL;DR: In this article, anisotropic plastic flow and ductile fracture of AA6013 aluminum sheet is investigated under quasistatic conditions, and the fracture loci are represented by the Oyane, Johnson-Cook and Hosford-Coulomb models.
Journal ArticleDOI
Consideration of strength differential effect in sheet metals with symmetric yield functions
TL;DR: In this paper, a simple approach is proposed to extend symmetric yield functions for the consideration of strength differential (SD) effect in sheet metals by adding a weighted pressure term for anisotropic materials based on the approaches of Spitzig et al.
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Use of abrupt strain path change for determining subsequent yield surface: illustrations of basic idea
TL;DR: In this paper, a new method is proposed for determining the shape of the subsequent yield surface in the vicinity of a current loading point, where a proportional strain path is prescribed until the loading point of interest has been reached, then an abrupt strain path change is prescribed, which makes the stress point move quickly along the yield surface.
Journal ArticleDOI
Forming limit criterion for ductile anisotropic sheets as a material property and its deformation path insensitivity. Part I: Deformation path insensitive formula based on theoretical models
TL;DR: In this article, the authors proposed the forming limit criterion as a material property to account for the formability of the sheet, assuming that the fracture criterion is applicable as material property.
References
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XLVI. A theory of the plastic distortion of a polycrystalline aggregate under combined stresses.
J.F.W. Bishop,Rodney Hill +1 more
TL;DR: In this paper, a general relationship between stress and plastic strain in polycrystalline aggregate is derived for any metal in which individual crystals deform by slipping over preferred planes under a critical shear stress.
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CXXVIII. A theoretical derivation of the plastic properties of a polycrystalline face-centred metal
J.F.W. Bishop,Rodney Hill +1 more
TL;DR: In this paper, it was shown that the work-hardness of an isotropic aggregate of face-centred cubic crystals is a function only of the total plastic work if the grains hardened equally.
Journal ArticleDOI
Calculation of the taylor factor and lattice rotations for bcc metals deforming by pencil glide
J. M. Rosenberg,H. R. Piehler +1 more
TL;DR: In this article, the Taylor factor and the corresponding lattice rotations for tension or compression have been computed for grains of various orientations postulated to slip on arbitrary planes in 〈111〉 directions.
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The anomalous behaviour of aluminium sheet under balanced biaxial tension
John Woodthorpe,Roger Pearce +1 more
TL;DR: In this paper, the authors investigated the anomalous behavior of aluminium in uniaxial and biaxiaial tension and showed that anisotropic plasticity theory does not hold for all metals.
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