FE analysis of springback and secondary yielding effect during forward extrusion

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The response of the work-material during forward extrusion and the subsequent unloading process was analysed with a view to examining differences in prediction of component-form errors, when different constitutive models are used. Two types of constitutive models were adopted for the analysis-classical theory of plasticity (CP) with isotropic hardening and non-classical theory of plasticity (NCP). When compared the results of the CP model with the NCP model, the latter shows a slightly smaller maximum punch-force requirement, smaller diameter of the extrudate and larger contraction of the die during unloading. The significant difference in the predicted final dimensions of the extrudate with different constitutive models suggests that more accurate constitutive descriptions on the work-material have to be used for the analysis of component-form errors in precision forming, if more accurate results are to be achieved.
Original languageEnglish
Pages (from-to)211-218
Number of pages7
JournalJournal of Materials Processing Technology
Volume135
Issue number2-3
DOIs
Publication statusPublished - 2003

Fingerprint

Springback
Extrusion
Plasticity
Constitutive Model
Constitutive models
Unloading
Hardening
Contraction
Die
Prediction
Requirements
Model
Form

Keywords

  • extrusion
  • fe simulation
  • secondary yielding
  • springback
  • constitutive model
  • design engineering

Cite this

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title = "FE analysis of springback and secondary yielding effect during forward extrusion",
abstract = "The response of the work-material during forward extrusion and the subsequent unloading process was analysed with a view to examining differences in prediction of component-form errors, when different constitutive models are used. Two types of constitutive models were adopted for the analysis-classical theory of plasticity (CP) with isotropic hardening and non-classical theory of plasticity (NCP). When compared the results of the CP model with the NCP model, the latter shows a slightly smaller maximum punch-force requirement, smaller diameter of the extrudate and larger contraction of the die during unloading. The significant difference in the predicted final dimensions of the extrudate with different constitutive models suggests that more accurate constitutive descriptions on the work-material have to be used for the analysis of component-form errors in precision forming, if more accurate results are to be achieved.",
keywords = "extrusion, fe simulation, secondary yielding, springback, constitutive model, design engineering",
author = "X. Peng and Y. Qin and R. Balendra",
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FE analysis of springback and secondary yielding effect during forward extrusion. / Peng, X.; Qin, Y.; Balendra, R.

In: Journal of Materials Processing Technology, Vol. 135, No. 2-3, 2003, p. 211-218.

Research output: Contribution to journalArticle

TY - JOUR

T1 - FE analysis of springback and secondary yielding effect during forward extrusion

AU - Peng, X.

AU - Qin, Y.

AU - Balendra, R.

PY - 2003

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N2 - The response of the work-material during forward extrusion and the subsequent unloading process was analysed with a view to examining differences in prediction of component-form errors, when different constitutive models are used. Two types of constitutive models were adopted for the analysis-classical theory of plasticity (CP) with isotropic hardening and non-classical theory of plasticity (NCP). When compared the results of the CP model with the NCP model, the latter shows a slightly smaller maximum punch-force requirement, smaller diameter of the extrudate and larger contraction of the die during unloading. The significant difference in the predicted final dimensions of the extrudate with different constitutive models suggests that more accurate constitutive descriptions on the work-material have to be used for the analysis of component-form errors in precision forming, if more accurate results are to be achieved.

AB - The response of the work-material during forward extrusion and the subsequent unloading process was analysed with a view to examining differences in prediction of component-form errors, when different constitutive models are used. Two types of constitutive models were adopted for the analysis-classical theory of plasticity (CP) with isotropic hardening and non-classical theory of plasticity (NCP). When compared the results of the CP model with the NCP model, the latter shows a slightly smaller maximum punch-force requirement, smaller diameter of the extrudate and larger contraction of the die during unloading. The significant difference in the predicted final dimensions of the extrudate with different constitutive models suggests that more accurate constitutive descriptions on the work-material have to be used for the analysis of component-form errors in precision forming, if more accurate results are to be achieved.

KW - extrusion

KW - fe simulation

KW - secondary yielding

KW - springback

KW - constitutive model

KW - design engineering

UR - http://dx.doi.org/10.1016/S0924-0136(02)00898-1

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