On the nonlinear anelastic behaviour of AHSS

Ali Torkabadi; Vincent T. Meinders; Antonius H. van den Boogaard

doi:10.1088/1742-6596/734/3/032100

On the nonlinear anelastic behaviour of AHSS

Ali Torkabadi, Vincent T. Meinders, Antonius H. van den Boogaard

Faculty of Engineering Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

2 Citations (Scopus)

133 Downloads (Pure)

Abstract

It has been widely observed that below the yield stress the loading/unloading stress-strain curves of plastically deformed metals are in fact not linear but slightly curved, showing a hysteresis behaviour during unloading/reloading cycles. In addition to the purely elastic strain, extra dislocation based micro-mechanisms are contributing to the reversible strain of the material which results in the nonlinear unloading/reloading behaviour. This extra reversible strain is the so called anelastic strain. As a result, the springback will be larger than that predicted by FEM considering only the recovery of the elastic strain. In this work the physics behind the anelastic behaviour is discussed and experimental results for a dual phase steel are demonstrated. Based on the physics of the phenomenon a model for anelastic behaviour is presented that can fit the experimental results with a good accuracy.

Original language	English
Title of host publication	NUMISHEET 2016: 10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes
Editors	R. Cardoso, E. De Souza Neto, J.M.A. César de Sá, O.B. Adetoro
Publisher	Institute of Physics (IOP)
Pages	-
DOIs	https://doi.org/10.1088/1742-6596/734/3/032100
Publication status	Published - 4 Sept 2016
Event	10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes, NUMISHEET 2016 - Bristol, United Kingdom Duration: 4 Sept 2016 → 9 Sept 2016 Conference number: 10

Publication series

Name
Publisher	IOP Publishing
Volume	734
ISSN (Print)	1742-6588
ISSN (Electronic)	1742-6596

Conference

Conference	10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes, NUMISHEET 2016
Abbreviated title	NUMISHEET 2016
Country/Territory	United Kingdom
City	Bristol
Period	4/09/16 → 9/09/16
Other	04-09-2016 - 09-09-2016

Keywords

IR-102458
METIS-319398

Access to Document

10.1088/1742-6596/734/3/032100

Torkabadi_2016_J._Phys.__Conf._Ser._734_032100_

Cite this

Torkabadi, A., Meinders, V. T., & van den Boogaard, A. H. (2016). On the nonlinear anelastic behaviour of AHSS. In R. Cardoso, E. De Souza Neto, J. M. A. César de Sá, & O. B. Adetoro (Eds.), NUMISHEET 2016: 10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes (pp. -). Institute of Physics (IOP). https://doi.org/10.1088/1742-6596/734/3/032100

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abstract = "It has been widely observed that below the yield stress the loading/unloading stress-strain curves of plastically deformed metals are in fact not linear but slightly curved, showing a hysteresis behaviour during unloading/reloading cycles. In addition to the purely elastic strain, extra dislocation based micro-mechanisms are contributing to the reversible strain of the material which results in the nonlinear unloading/reloading behaviour. This extra reversible strain is the so called anelastic strain. As a result, the springback will be larger than that predicted by FEM considering only the recovery of the elastic strain. In this work the physics behind the anelastic behaviour is discussed and experimental results for a dual phase steel are demonstrated. Based on the physics of the phenomenon a model for anelastic behaviour is presented that can fit the experimental results with a good accuracy.",

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author = "Ali Torkabadi and Meinders, {Vincent T.} and {van den Boogaard}, {Antonius H.}",

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editor = "R. Cardoso and {De Souza Neto}, E. and {C{\'e}sar de S{\'a}}, J.M.A. and O.B. Adetoro",

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Torkabadi, A, Meinders, VT & van den Boogaard, AH 2016, On the nonlinear anelastic behaviour of AHSS. in R Cardoso, E De Souza Neto, JMA César de Sá & OB Adetoro (eds), NUMISHEET 2016: 10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes. Institute of Physics (IOP), pp. -, 10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes, NUMISHEET 2016, Bristol, United Kingdom, 4/09/16. https://doi.org/10.1088/1742-6596/734/3/032100

On the nonlinear anelastic behaviour of AHSS. / Torkabadi, Ali; Meinders, Vincent T.; van den Boogaard, Antonius H.
NUMISHEET 2016: 10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes. ed. / R. Cardoso; E. De Souza Neto; J.M.A. César de Sá; O.B. Adetoro. Institute of Physics (IOP), 2016. p. -.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - On the nonlinear anelastic behaviour of AHSS

AU - Torkabadi, Ali

AU - Meinders, Vincent T.

AU - van den Boogaard, Antonius H.

N1 - Conference code: 10

PY - 2016/9/4

Y1 - 2016/9/4

N2 - It has been widely observed that below the yield stress the loading/unloading stress-strain curves of plastically deformed metals are in fact not linear but slightly curved, showing a hysteresis behaviour during unloading/reloading cycles. In addition to the purely elastic strain, extra dislocation based micro-mechanisms are contributing to the reversible strain of the material which results in the nonlinear unloading/reloading behaviour. This extra reversible strain is the so called anelastic strain. As a result, the springback will be larger than that predicted by FEM considering only the recovery of the elastic strain. In this work the physics behind the anelastic behaviour is discussed and experimental results for a dual phase steel are demonstrated. Based on the physics of the phenomenon a model for anelastic behaviour is presented that can fit the experimental results with a good accuracy.

AB - It has been widely observed that below the yield stress the loading/unloading stress-strain curves of plastically deformed metals are in fact not linear but slightly curved, showing a hysteresis behaviour during unloading/reloading cycles. In addition to the purely elastic strain, extra dislocation based micro-mechanisms are contributing to the reversible strain of the material which results in the nonlinear unloading/reloading behaviour. This extra reversible strain is the so called anelastic strain. As a result, the springback will be larger than that predicted by FEM considering only the recovery of the elastic strain. In this work the physics behind the anelastic behaviour is discussed and experimental results for a dual phase steel are demonstrated. Based on the physics of the phenomenon a model for anelastic behaviour is presented that can fit the experimental results with a good accuracy.

KW - IR-102458

KW - METIS-319398

U2 - 10.1088/1742-6596/734/3/032100

DO - 10.1088/1742-6596/734/3/032100

M3 - Conference contribution

SP - -

BT - NUMISHEET 2016: 10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes

A2 - Cardoso, R.

A2 - De Souza Neto, E.

A2 - César de Sá, J.M.A.

A2 - Adetoro, O.B.

PB - Institute of Physics (IOP)

T2 - 10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes, NUMISHEET 2016

Y2 - 4 September 2016 through 9 September 2016

ER -

On the nonlinear anelastic behaviour of AHSS

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