Forming limit of TWBs with material damage consideration - Finite element simulation and experiments

M. Jie; C. L. Chow; Luen Chow Chan; C. H. Cheng

Forming limit of TWBs with material damage consideration - Finite element simulation and experiments

M. Jie, C. L. Chow, Luen Chow Chan, C. H. Cheng

Research output: Journal article publication › Journal article › Academic research › peer-review

Abstract

Forming limit of tailor-welded blanks (TWBs) is studied experimentally and numerically. TWBs made of JIS G3141 steel were manufactured with laser-welding. Three sets of different thickness ratios were chosen for the investigation. The mechanical properties and damage parameters of the material required for the simulation were measured. A damage coupled plastic model and the damage criterion for localized necking were coded in LS-DYNA through a user-defined material subroutine with detailed procedures. By means of input cards of LS-DYNA, the user-defined history variables can be properly stored and displayed. To illustrate the application of the damage coupled LS-DYNA, the simulation of the TWB forming process was performed. The predicted forming limit strains were found to compare satisfactorily with those obtained from the tests.

Original language	English
Pages (from-to)	385-390
Number of pages	6
Journal	Key Engineering Materials
Volume	274-276
Issue number	I
Publication status	Published - 1 Dec 2004

Keywords

Finite element analysis
Forming limit diagram
Material damage
Tailor-welded blanking

ASJC Scopus subject areas

Ceramics and Composites
Chemical Engineering (miscellaneous)

Cite this

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title = "Forming limit of TWBs with material damage consideration - Finite element simulation and experiments",

abstract = "Forming limit of tailor-welded blanks (TWBs) is studied experimentally and numerically. TWBs made of JIS G3141 steel were manufactured with laser-welding. Three sets of different thickness ratios were chosen for the investigation. The mechanical properties and damage parameters of the material required for the simulation were measured. A damage coupled plastic model and the damage criterion for localized necking were coded in LS-DYNA through a user-defined material subroutine with detailed procedures. By means of input cards of LS-DYNA, the user-defined history variables can be properly stored and displayed. To illustrate the application of the damage coupled LS-DYNA, the simulation of the TWB forming process was performed. The predicted forming limit strains were found to compare satisfactorily with those obtained from the tests.",

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T1 - Forming limit of TWBs with material damage consideration - Finite element simulation and experiments

AU - Jie, M.

AU - Chow, C. L.

AU - Chan, Luen Chow

AU - Cheng, C. H.

PY - 2004/12/1

Y1 - 2004/12/1

N2 - Forming limit of tailor-welded blanks (TWBs) is studied experimentally and numerically. TWBs made of JIS G3141 steel were manufactured with laser-welding. Three sets of different thickness ratios were chosen for the investigation. The mechanical properties and damage parameters of the material required for the simulation were measured. A damage coupled plastic model and the damage criterion for localized necking were coded in LS-DYNA through a user-defined material subroutine with detailed procedures. By means of input cards of LS-DYNA, the user-defined history variables can be properly stored and displayed. To illustrate the application of the damage coupled LS-DYNA, the simulation of the TWB forming process was performed. The predicted forming limit strains were found to compare satisfactorily with those obtained from the tests.

AB - Forming limit of tailor-welded blanks (TWBs) is studied experimentally and numerically. TWBs made of JIS G3141 steel were manufactured with laser-welding. Three sets of different thickness ratios were chosen for the investigation. The mechanical properties and damage parameters of the material required for the simulation were measured. A damage coupled plastic model and the damage criterion for localized necking were coded in LS-DYNA through a user-defined material subroutine with detailed procedures. By means of input cards of LS-DYNA, the user-defined history variables can be properly stored and displayed. To illustrate the application of the damage coupled LS-DYNA, the simulation of the TWB forming process was performed. The predicted forming limit strains were found to compare satisfactorily with those obtained from the tests.

KW - Finite element analysis

KW - Forming limit diagram

KW - Material damage

KW - Tailor-welded blanking

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M3 - Journal article

SN - 1013-9826

VL - 274-276

SP - 385

EP - 390

JO - Key Engineering Materials

JF - Key Engineering Materials

IS - I

ER -

Forming limit of TWBs with material damage consideration - Finite element simulation and experiments

Abstract

Keywords

ASJC Scopus subject areas

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