Upper-bound anisotropic yield locus calculations assuming 〈111〉-pencil glide
Roger W Logan,William F. Hosford +1 more
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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
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Dissertation
Déchirure ductile des tôles minces en alliage d'aluminium 2024 pour application aéronautique
TL;DR: In this paper, a simulation of the dechirure ductile de toles minces en alliage d'aluminium 2024 is presented, based on an extension of the modele de Rousselier.
Journal ArticleDOI
Hole-Expansion: Sensitivity of Failure Prediction on Plastic Anisotropy Modeling
Jinjin Ha,Yannis P. Korkolis +1 more
TL;DR: In this article, the influence of yield function parameters on hole-expansion (HE) predictions for an anisotropic AA6022-T4 aluminum sheet was investigated for a fully-instrumented double-action hydraulic press with a flat-headed punch.
Proceedings ArticleDOI
On The Influence Of The Yield Locus Shape In The Simulation Of Sheet Stretch Forming
Kjell Mattiasson,Mats Sigvant +1 more
TL;DR: In this paper, the Hosford family of non-quadratic yield functions are characterized by a stress exponent, which has been shown to have a strong coupling to the crystallographic structure of the material.
Dissertation
Identification des lois de comportement elastoplastiques par essais inhomogénes et simulations numériques
TL;DR: In this paper, a technique specifique d'analyse de sensibilite des essais par rapport aux different parametres a identifier of la loi de comportement is proposed.
Journal ArticleDOI
A Study on Yield Function for Ti–6Al–4V Titanium Alloy Sheets at Elevated Temperatures
TL;DR: In this paper, a new yield function was proposed to describe not only the anisotropic but also the asymmetric behavior between the tension and compression of Ti-6Al-4V titanium alloy sheets using a fitting equation to determine the material constants of the yield function.
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Journal ArticleDOI
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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