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
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Inflation and burst of anisotropic aluminum tubes for hydroforming applications
TL;DR: In this paper, the performance of different anisotropic yield functions in predicting the response and burst of tubes loaded under combined internal pressure and axial load was evaluated, and the results were used to calibrate the non-quadratic yield functions of Hosford and Karafillis-Boyce.
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Calculations of forming limit
TL;DR: In this paper, the shape of forming limit diagrams (FLDs) using a high-exponent yield criterion with the Marciniak and Kuczynski (M-K) analysis has been extended to include the effects of changing the strain paths and applied to aluminum alloy 2008 T4.
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On the potential of recurrent neural networks for modeling path dependent plasticity
Maysam Gorji,Maysam Gorji,Maysam Gorji,Mojtaba Mozaffar,Julian N. Heidenreich,Julian N. Heidenreich,Jian Cao,Dirk Mohr,Dirk Mohr +8 more
TL;DR: In this paper, a neural network with gated recurrent units (GRUs) and fully-connected layer is proposed for the modeling of plane stress plasticity for arbitrary loading paths, which can capture the characteristic non-linearities in the uniaxial stress-strain response such as the Bauschinger effect, permanent softening or latent hardening.
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Comments on anisotropic yield criteria
TL;DR: In this paper, the author's criterion was modified so that it is expressed in terms of principal stresses rather than referring stresses to the symmetry axes, and the author also suggested that the criterion could be modified to express principal stresses instead of symmetry axes.
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Experiments and modeling of anisotropic aluminum extrusions under multi-axial loading – Part I: Plasticity
TL;DR: In this article, a dual actuator system was used to characterize the plastic behavior of 2-mm thick extruded aluminum AA6260-T6 sheets under large deformations, and a special extension of the Yld2000-2d yield function for general three-dimensional stress states was also presented.
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.
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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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