Plastic behavior of aluminum-killed steel following plane-strain deformation

Wagoner, R. H.; Laukonis, Joseph V.

doi:10.1007/bf02664833

Cited by 89 publications

(18 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The more frequent paths used were sequences of uniaxial tension at different angles; plane strain (rolling or plane strain tension)-uniaxial tension or the reverse; equibiaxial stretchinguniaxial tension or the reverse and uniaxial tension-shear. The results concerning the mechanical behaviour in reloading can be described in two contrasting patterns (Ghosh and Backofen, 1973;Wagoner and Laukonis, 1983;Chung and Wagoner, 1986):…”

Section: Introductionmentioning

confidence: 99%

“…In recent studies on the plastic deformation of steel (Ranta-Eskola, 1980;Laukonis, 1981;Wagoner and Laukonis, 1983;Schmitt et al, 1985;Raphanel et al, 1986;Doucet and Wagoner, 1989) aluminium (Lloyd and Sang, 1979;Juul Jensen and Hansen, 1990;Wilson et al, 1990) and copper sheets (Vieira et aL, 1990;Schmitt et al, 1991;Fernandes et al, 1993;Vieira and Fernandes, 1995), the mechanical response in reloading has been exhaustively analysed. For strain path changes other than inversion of the loading conditions, these metals display a behaviour of the second type.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A modified swift law for prestrained materials

Fernandes

Rodrigues

Menezes

et al. 1998

International Journal of Plasticity

View full text Add to dashboard Cite

Al~tracl:--A modified Swift law to describe the evolution of the mechanical behaviour in reloading of prestrained materials is proposed in this work. This equation is deduced from the original Swift law by including a parameter that accounts for the effect of strain path change. This parameter depends on the value of the yield stress and the subsequent work-hardening behaviour in reloading. The: new equation predicts well the general mechanical behaviour in the second path for copper and steel. In particular, it predicts accurately the strain value for which necking occurs during reloading and fits experimental stress-strain curves well. The flow equation formulated remains sufficiently simple to be applied in finite element modelling of prestrained materials. However, since the parameter, which is needed for the modified Swift law, must be previously known, the strain path change itself cannot be part of the simulation.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A modified swift law for prestrained materials

Fernandes

Rodrigues

Menezes

et al. 1998

International Journal of Plasticity

View full text Add to dashboard Cite

show abstract

“…After a sufficiently large pre-deformation, the work-softening can lead to instability, because the subsequent increase in work hardening may be insufficient to compensate the geometrical softening, and the result is very early strain localization and necking (Li and Bate, 1991). The influence of strain-path changes on ductility and formability has been the subject of many studies (Ghosh and Backofen, 1973;Hutchinson et al, 1976;Hutchinson and Davis, 1983;Laukonis, 1979;Laukonis and Ghosh, 1978;Li and Bate, 1991;Lloyd and Sang, 1979;Wagoner and Laukonis, 1983;Wilson et al, 1990;Zandrahimi et al, 1989). To our knowledge, only few simulations have been performed with the aim to study strain localization after a strain-path change (see e.g.…”

mentioning

confidence: 99%

Strain-path change induced transients in flow stress, work hardening and r-values in aluminum

Maník

Holmedal

Hopperstad

2015

International Journal of Plasticity

View full text Add to dashboard Cite

Commercially pure aluminum with random texture was prestrained either by rolling or by uniaxial compression, and then tested in uniaxial tension to study the transients in flow stress, work hardening and r-value induced by the strain-path change. New experimental results are reported on the variation of the r-value and the permanently reduced work hardening subsequent to the strain-path change. A continuum plasticity model was developed that can reproduce the observed behavior. The model applies a second-order "delayed pointer" tensor to represent the microstructural anisotropy and was implemented into the finite element software LS-DYNA. The model was calibrated to the experimental data, and a simulation of early strain localization subsequent to an orthogonal strain-path change was compared to strain fields measured by a digital image correlation technique.2

show abstract

“…A transient in the work hardening occurs after the change of strain path. Results from previous research on mechanical behaviour after reloading have been summarised as follows (Ghosh and Backofen, 1973;Wagoner and Laukonis, 1983;Chung and Wagoner, 1986;Zandrahimi et al, 1989):…”

Section: Introductionmentioning

confidence: 99%

Non-uniform deformation after prestrain

Fernandes

Menezes

Rodrigues

et al. 2000

European Journal of Mechanics - A/Solids

View full text Add to dashboard Cite

-The deformation behaviour of prestrained metal sheets is analysed in this work. The non-uniform deformation observed during reloading in tension was studied, by following deformation in different regions of the samples. It takes into account the presence of geometrical defects in the samples and explains the importance of mechanical behaviour. A simplified analysis was used, to model the behaviour in tension of a metallic specimen with geometrical imperfection. The flow behaviour is described using a Swift law equation, which includes strain-rate sensitivity. A modified law was used for prestrained materials and this incorporates the plastic prestrain value, adjusted to the path change. The model predicts imperfection growth kinetics with strain, and strain saturation in the homogeneous region, due to the onset of necking. © 2000 Éditions scientifiques et médicales Elsevier SAS tensile deformation / plastic instability / complex strain paths

show abstract

Plastic behavior of aluminum-killed steel following plane-strain deformation

Cited by 89 publications

References 23 publications

A modified swift law for prestrained materials

A modified swift law for prestrained materials

Strain-path change induced transients in flow stress, work hardening and r-values in aluminum

Non-uniform deformation after prestrain

Contact Info

Product

Resources

About