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Cited by 42 publications
(13 citation statements)
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“…where A, B, δ are the parameters related to property of sintered material and the parameters A and B are the functions of ρ, material transient density [1][2][3][4][5][6][7][8][9], and Y, Y 0 are the instantaneous yield strength of sintered powder material and yield strength of its matrix material respectively, and J 1 is the first invariant of stress tensor, i.e., the linear stress invariant, J 2 is the second invariant of deviatoric stress tensor, i.e., the quadratic stress deviator invariant. J 2 = σ ij σ ij /2 and J 1 = σ ii where σ ij is the stress deviator and σ ij is the stress tensor and ρ is the relative density of working material during deformation.…”
Section: Yield Criterionmentioning
confidence: 99%
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“…where A, B, δ are the parameters related to property of sintered material and the parameters A and B are the functions of ρ, material transient density [1][2][3][4][5][6][7][8][9], and Y, Y 0 are the instantaneous yield strength of sintered powder material and yield strength of its matrix material respectively, and J 1 is the first invariant of stress tensor, i.e., the linear stress invariant, J 2 is the second invariant of deviatoric stress tensor, i.e., the quadratic stress deviator invariant. J 2 = σ ij σ ij /2 and J 1 = σ ii where σ ij is the stress deviator and σ ij is the stress tensor and ρ is the relative density of working material during deformation.…”
Section: Yield Criterionmentioning
confidence: 99%
“…Many researchers suggest the expressions to determine A and B, as shown by Table 1 In Table 1 when sintered powder materials are isotropy, namely plastic Poisson's ratio μ = 0.5ρ 2 , the expressions to determine both A and B are only correlative with ρ, i.e., [9] 2…”
Section: Yield Criterionmentioning
confidence: 99%
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“…They have proposed the criteria called Formability Stress Index (β) for describing the effect of the mean stress and the effective stress with the help of two theories, proposed by Kuhn-Downey and Whang-Kobayashi. Narayanasamy et al [12] investigated some of the important criteria generally used for the prediction of workability. They have done tremendous experimental work on workability behaviour of aluminium [13,14], Al-Al 2 O 3 [15][16][17][18][19][20], Al-Fe Fig.…”
Section: Introductionmentioning
confidence: 99%
“…Ring, cylindrical, tapered and flanged upset test samples were utilised for providing the experimental values of the critical damage at fracture under several different loading conditions and two of the ductile fracture criteria were employed to predict and analyse the initiation site and the level of deformation at which surface or internal cracking will occur during finite element simulation of three types of metalworking processes, namely, radial extrusion, open-die forging and blanking by Gouveia et al [12]. A new form of yield criterion considering an anisotropic parameter for porous sintered powder metallurgy metals was proposed by Narayanasamy et al [13]. Venugopal Rao et al [14] performed a Finite Element (FE) simulation of the published upsetting experiments on cylindrical test specimens to determine the threshold values attained by various criteria at the fractured locations, for a wide variety of materials.…”
Section: Introductionmentioning
confidence: 99%