Crystal plasticity based analysis of localized necking in aluminum tube under internal pressure

Shi, Yucai; Wu, Peidong; Lloyd, D. J.; Embury, J.D.

doi:10.1016/j.euromechsol.2010.03.005

Cited by 16 publications

(20 citation statements)

References 38 publications

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“…Anand and Kalidindi, 1994;Wu et al, 2004). Furthermore, this approach facilitates taking into account grain morphology and modeling of inhomogeneous deformations at the crystal level (Wu et al, 2006(Wu et al, , 2007bShi et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Evaluation of self-consistent polycrystal plasticity models for magnesium alloy AZ31B sheet

Wang

Raeisinia

et al. 2010

International Journal of Solids and Structures

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279

117

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a b s t r a c tVarious self-consistent polycrystal plasticity models for hexagonal close packed (HCP) polycrystals are evaluated by studying the deformation behavior of magnesium alloy AZ31B sheet under different uniaxial strain paths. In all employed polycrystal plasticity models both slip and twinning contribute to plastic deformation. The material parameters for the various models are fitted to experimental uniaxial tension and compression along the rolling direction (RD) and then used to predict uniaxial tension and compression along the traverse direction (TD) and uniaxial compression in the normal direction (ND). An assessment of the predictive capability of the polycrystal plasticity models is made based on comparisons of the predicted and experimental stress responses and R values. It is found that, among the models examined, the self-consistent models with grain interaction stiffness halfway between those of the limiting Secant (stiff) and Tangent (compliant) approximations give the best results. Among the available options, the Affine self-consistent scheme results in the best overall performance. Furthermore, it is demonstrated that the R values under uniaxial tension and compression within the sheet plane show a strong dependence on imposed strain. This suggests that developing anisotropic yield functions using measured R values must account for the strain dependence.

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Section: Discussionmentioning

confidence: 99%

Evaluation of self-consistent polycrystal plasticity models for magnesium alloy AZ31B sheet

Wang

Raeisinia

et al. 2010

International Journal of Solids and Structures

Self Cite

279

117

View full text Add to dashboard Cite

show abstract

“…The CP model allows studying phenomena which are outside the scope of the phenomenological models, like surface roughening [34], and their influence on necking. Other applications of the CP model are localization in thin films [35], tubes under pressure [36] and deep drawing [37]. In [38] and [39], tensile tests on Al and Cu single crystals with rectangular cross-section of the specimen were simulated, but, in general, necking in the uniaxial tension test is not often studied using CP models.…”

Section: Introductionmentioning

confidence: 99%

Simulation of large-strain behaviour of aluminium alloy under tensile loading using anisotropic plasticity models

Khadyko¹,

Dumoulin²,

Hopperstad³

2015

Computers & Structures

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Cylindrical smooth and notched AA6060 samples were tested in tension. The material was either cast and homogenized or extruded with strong cube texture. The textured specimens demonstrated unusual shapes of the fracture surface that deviated from elliptical and were more rectangular in shape. A phenomenological plasticity model was used in finite element simulations of the tensile tests, together with a crystal plasticity model. The phenomenological plasticity model could not reproduce the evolution of the cross-section of the specimens made from the textured material. The crystal plasticity finite element model on the other hand demonstrated behaviour closer to the experiments.

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“…The overall objective of the present study is to further extend the methodology developed by Wu and Lloyd [10] and Shi et al [18] to study surface roughening in a blow-formed bottle using crystal plasticity. The effects of texture spatial orientation distribution, material strain rate sensitivity, work hardening, and initial surface topography on surface roughness development for blow-formed aluminum bottle are studied in details.…”

Section: Introductionmentioning

confidence: 98%

“…It has been generally accepted that failure in a pressurized elastic-plastic tube is usually initiated from a strong shear band inside a localized neck on one side of the tube at a stage somewhat beyond the maximum pressure. Shi et al [18] studied the localized necking of an aluminum tube under internal pressure. It was found that the localized necking is associated with a surface instability resulting from non-uniform deformation of aluminum tube under pressurization.…”

Section: Introductionmentioning

confidence: 99%

“…The deformation and failure of ductile cylindrical tubes under internal pressure have been studied experimentally and theoretically for many years [13][14][15][16][17][18]. It has been generally accepted that failure in a pressurized elastic-plastic tube is usually initiated from a strong shear band inside a localized neck on one side of the tube at a stage somewhat beyond the maximum pressure.…”

Section: Introductionmentioning

confidence: 99%

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Numerical study of surface roughening in blow-formed aluminum bottle with crystal plasticity

Shi¹,

Wu²,

Lloyd³

et al. 2015

Materials Science and Engineering: A

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Crystal plasticity based analysis of localized necking in aluminum tube under internal pressure

Cited by 16 publications

References 38 publications

Evaluation of self-consistent polycrystal plasticity models for magnesium alloy AZ31B sheet

Evaluation of self-consistent polycrystal plasticity models for magnesium alloy AZ31B sheet

Simulation of large-strain behaviour of aluminium alloy under tensile loading using anisotropic plasticity models

Numerical study of surface roughening in blow-formed aluminum bottle with crystal plasticity

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