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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Modeling the anisotropic plasticity and damage of AA7075 alloy in hot forming
TL;DR: In this paper, an improved anisotropic damage constitutive model was proposed to accurately predict the forming limit curves of AA7075 alloy for different forming temperatures, strain rates and loading directions.
Journal ArticleDOI
Anisotropic Deformation Behavior of Al2024T351 Aluminum Alloy
TL;DR: In this article, the authors investigated the effects of material anisotropy on the yielding and hardening behavior of 2024T351 aluminum alloy using isotropic and anisotropic yield criteria.
Journal ArticleDOI
Modeling the anisotropic plasticity and damage of AA7075 alloy in hot forming
TL;DR: In this article , an improved anisotropic damage constitutive model was established to model the thermal deformation and damage of AA7075 alloy under hot forming conditions, and the model was then numerically implemented in hot Nakajima simulations and evaluated comprehensively from the aspects of limit strain point, punch force displacement curve, major strain field and fracture position.
Journal ArticleDOI
The Prediction of Earing and the Design of Initial Shape of Blank in Cylindrical Cup Drawing
Tung Sheng Yang,Yuan Chuan Hsu +1 more
TL;DR: In this paper, a finite element analysis is used to investigate the earing of the deep drawing process, and a reverse forming method for obtaining the initial blank's shape according to the forward cup deep drawing simulation is proposed.
Dissertation
Hybrid experimental-numerical determination of the loading path to fracture in TRIP780 sheets subjected to multi-axial loading
TL;DR: In this paper, a hybrid experimental-numerical approach is taken to determine the loading path in various fracture experiments on TRIANGLE-TRIP780 steel sheets, and the results of the hybrid-experimental numerical analysis of a fracture experiment depend strongly on the chosen constitutive model.
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.
Journal ArticleDOI
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.
Journal ArticleDOI
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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Plastic behavior and stretchability of sheet metals. Part I: A yield function for orthotropic sheets under plane stress conditions
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