An investigation of a new 2D CDM model in predicting failure in HFQing of an automotive panel

Mohamed Mohamed, Nan Li, Liliang Wang, Omer EL Fakir, Jianguo Lin, Trevor Dean, John Dear

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

1 Citation (Scopus)

Abstract

In this paper a comparative analysis of failure prediction when using the solution heat treatment cold die forming and quenching process, known as HFQ™, for forming an aluminium alloy AA6082 automotive panel part (bulkhead panel), is presented. An experimental programme has been designed and a series of tests have been carried out to investigate the effect of process parameters on the success of forming the complex-shaped automotive panel component using the high strength aluminium alloy. A set of unified viscoplastic plane-stress continuum damage mechanics (2D-CDM) constitutive equations was calibrated for AA6082 over a temperature range of 450 ºC–525 ºC and strain rates of 0.1, 1.0 and 10 s-1, and then was integrated into the commercial finite element code, LS-DYNA, via a user-defined material subroutine, UMAT, for the forming process simulation. The results show that the CDM model can be used to provide accurate formability and failure predictions.
LanguageEnglish
Title of host publication4th International Conference on New Forming Technology (ICNFT 2015)
EditorsS. J. Yuan, J. Lin, Y. Qin, T. A. Dean, F. Vollertsen
Number of pages6
DOIs
Publication statusPublished - 10 Aug 2015

Publication series

NameMATEC Web of Conferences
PublisherEDP Sciences
Volume21
ISSN (Print)2261-236X

Fingerprint

Aluminum alloys
Continuum damage mechanics
High strength alloys
Subroutines
Formability
Constitutive equations
Strain rate
Quenching
Heat treatment
Temperature

Keywords

  • aluminium
  • aluminium alloys
  • constitutive equations
  • continuum damage mechanics
  • finite element method
  • high strength alloys
  • strain rate
  • stresses

Cite this

Mohamed, M., Li, N., Wang, L., EL Fakir, O., Lin, J., Dean, T., & Dear, J. (2015). An investigation of a new 2D CDM model in predicting failure in HFQing of an automotive panel. In S. J. Yuan, J. Lin, Y. Qin, T. A. Dean, & F. Vollertsen (Eds.), 4th International Conference on New Forming Technology (ICNFT 2015) [05011] (MATEC Web of Conferences; Vol. 21). https://doi.org/10.1051/matecconf/20152105011
Mohamed, Mohamed ; Li, Nan ; Wang, Liliang ; EL Fakir, Omer ; Lin, Jianguo ; Dean, Trevor ; Dear, John. / An investigation of a new 2D CDM model in predicting failure in HFQing of an automotive panel. 4th International Conference on New Forming Technology (ICNFT 2015). editor / S. J. Yuan ; J. Lin ; Y. Qin ; T. A. Dean ; F. Vollertsen. 2015. (MATEC Web of Conferences).
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abstract = "In this paper a comparative analysis of failure prediction when using the solution heat treatment cold die forming and quenching process, known as HFQ™, for forming an aluminium alloy AA6082 automotive panel part (bulkhead panel), is presented. An experimental programme has been designed and a series of tests have been carried out to investigate the effect of process parameters on the success of forming the complex-shaped automotive panel component using the high strength aluminium alloy. A set of unified viscoplastic plane-stress continuum damage mechanics (2D-CDM) constitutive equations was calibrated for AA6082 over a temperature range of 450 ºC–525 ºC and strain rates of 0.1, 1.0 and 10 s-1, and then was integrated into the commercial finite element code, LS-DYNA, via a user-defined material subroutine, UMAT, for the forming process simulation. The results show that the CDM model can be used to provide accurate formability and failure predictions.",
keywords = "aluminium, aluminium alloys, constitutive equations, continuum damage mechanics, finite element method, high strength alloys, strain rate, stresses",
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Mohamed, M, Li, N, Wang, L, EL Fakir, O, Lin, J, Dean, T & Dear, J 2015, An investigation of a new 2D CDM model in predicting failure in HFQing of an automotive panel. in SJ Yuan, J Lin, Y Qin, TA Dean & F Vollertsen (eds), 4th International Conference on New Forming Technology (ICNFT 2015)., 05011, MATEC Web of Conferences, vol. 21. https://doi.org/10.1051/matecconf/20152105011

An investigation of a new 2D CDM model in predicting failure in HFQing of an automotive panel. / Mohamed, Mohamed; Li, Nan; Wang, Liliang; EL Fakir, Omer ; Lin, Jianguo; Dean, Trevor; Dear, John.

4th International Conference on New Forming Technology (ICNFT 2015). ed. / S. J. Yuan; J. Lin; Y. Qin; T. A. Dean; F. Vollertsen. 2015. 05011 (MATEC Web of Conferences; Vol. 21).

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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N2 - In this paper a comparative analysis of failure prediction when using the solution heat treatment cold die forming and quenching process, known as HFQ™, for forming an aluminium alloy AA6082 automotive panel part (bulkhead panel), is presented. An experimental programme has been designed and a series of tests have been carried out to investigate the effect of process parameters on the success of forming the complex-shaped automotive panel component using the high strength aluminium alloy. A set of unified viscoplastic plane-stress continuum damage mechanics (2D-CDM) constitutive equations was calibrated for AA6082 over a temperature range of 450 ºC–525 ºC and strain rates of 0.1, 1.0 and 10 s-1, and then was integrated into the commercial finite element code, LS-DYNA, via a user-defined material subroutine, UMAT, for the forming process simulation. The results show that the CDM model can be used to provide accurate formability and failure predictions.

AB - In this paper a comparative analysis of failure prediction when using the solution heat treatment cold die forming and quenching process, known as HFQ™, for forming an aluminium alloy AA6082 automotive panel part (bulkhead panel), is presented. An experimental programme has been designed and a series of tests have been carried out to investigate the effect of process parameters on the success of forming the complex-shaped automotive panel component using the high strength aluminium alloy. A set of unified viscoplastic plane-stress continuum damage mechanics (2D-CDM) constitutive equations was calibrated for AA6082 over a temperature range of 450 ºC–525 ºC and strain rates of 0.1, 1.0 and 10 s-1, and then was integrated into the commercial finite element code, LS-DYNA, via a user-defined material subroutine, UMAT, for the forming process simulation. The results show that the CDM model can be used to provide accurate formability and failure predictions.

KW - aluminium

KW - aluminium alloys

KW - constitutive equations

KW - continuum damage mechanics

KW - finite element method

KW - high strength alloys

KW - strain rate

KW - stresses

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A2 - Yuan, S. J.

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A2 - Qin, Y.

A2 - Dean, T. A.

A2 - Vollertsen, F.

ER -

Mohamed M, Li N, Wang L, EL Fakir O, Lin J, Dean T et al. An investigation of a new 2D CDM model in predicting failure in HFQing of an automotive panel. In Yuan SJ, Lin J, Qin Y, Dean TA, Vollertsen F, editors, 4th International Conference on New Forming Technology (ICNFT 2015). 2015. 05011. (MATEC Web of Conferences). https://doi.org/10.1051/matecconf/20152105011