Finite element simulation of the steel plates hot rolling process

Cavaliere, Miguel A.; Goldschmit, Marcela B.; Dvorkin, Eduardo N.

doi:10.1002/nme.262

Cited by 24 publications

(12 citation statements)

References 18 publications

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“…A large portion of these accepts rigid-plasticity or visco-plasticity as an approximation (Zienkiewicz et al, 1978;Mori et al, 1982;Cavaliere et al, 2001), and residual stresses and the associate material behaviour are typically neglected. Sheet rolling often takes place at elevated temperatures (hot rolling), ranking material sensitivity essential, but the importance of elastic unloading is recognized for rolling at room temperature (cold rolling).…”

Section: Introductionmentioning

confidence: 99%

Rolling induced size effects in elastic–viscoplastic sheet metals

Nielsen

2015

European Journal of Mechanics - A/Solids

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Rolling processes for which the characteristic length scale reaches into the range where size effects become important are receiving increased interest. In particularly, this is owed to the roll-molding process under development for high-throughput of micronscale surface features. The study presented revolves around the rolling induced effect of visco-plasticity (ranging hot and cold rolling) in combination with strain gradient hardening -including both dissipative and energetic contributions. To bring out first order effects on rolling at small scale, the modeling efforts are limited to flat sheet rolling, where a non-homogeneous material deformation takes place between the rollers.Large strain gradients develop where the rollers first come in contact with the sheet, and a higher order plasticity model is employed to illustrate their influence at small scales. The study reveals that the energetic length parameter has negligible effect on the rolling quantities of interest, while the contribution coming from the dissipative length parameter can be dominant. Considering a slow and a fast moving sheet, respectively, convergence towards the rate independent limit is demonstrated, and a characteristic velocity is identified, for which the torque and punch force applied to the roller becomes independent of the material rate-sensitivity. *

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Section: Introductionmentioning

confidence: 99%

Rolling induced size effects in elastic–viscoplastic sheet metals

Nielsen

2015

European Journal of Mechanics - A/Solids

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“…In previous references we implemented the ow formulation using an Eulerian description of motion, via Thompson's pseudo-concentrations technique [7,[11][12][13][14][15][16][17][18].…”

Section: Implementation Via the Pseudo-concentrations Techniquementioning

confidence: 99%

A new rigid‐viscoplastic model for simulating thermal strain effects in metal‐forming processes

Dvorkin¹,

Toscano²

2003

Numerical Meth Engineering

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SUMMARYA new rigid-viscoplastic model that includes the e ect of thermal strains when modelling steady-state metal-forming processes was developed. A symmetric approximation to the resulting non-symmetric stiness matrix was derived. The thermo-mechanical ow formulation was implemented using the pseudoconcentrations technique. The new formulation was numerically tested showing that it provides reliable results.

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“…The main advantages of this implementation are that it is very efficient and that it does not require remeshing techniques. Regarding its use in technological analyses, the developed finite element formulation was implemented in our code METFOR and it is being used for analysing the hot rolling of steel products [8][9][10][11] and the continuous casting of steel slabs [12].…”

Section: Introductionmentioning

confidence: 99%