Springback prediction of TWIP automotive sheets

被引：52

作者：

Ahn, Kanghwan ^{[1
]}

Yoo, Donghoon ^{[1
]}

Seo, Min Hong ^{[2
]}

Park, Sung-Ho ^{[2
]}

Chung, Kwansoo ^{[1
]}

机构：

[1] Seoul Natl Univ, Intelligent Text Syst Res Ctr, Dept Mat Sci & Engn, Seoul 151742, South Korea

[2] POSCO Tech Res Labs, Gwangyang Si 545090, Jeonnam, South Korea

来源：

METALS AND MATERIALS INTERNATIONAL | 2009年 / 15卷 / 04期

关键词：

TWIP steel; metal forming; AHSS; spring-back; permanent softening; ANISOTROPIC YIELD FUNCTIONS; KINEMATIC HARDENING LAWS; HYBRID MEMBRANE/SHELL METHOD; METAL FORMING PROCESS; BACK EVALUATION; STEELS;

D O I：

10.1007/s12540-009-0637-z

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In an effort to reduce the weight of vehicles, automotive companies are replacing conventional steel parts with light weight alloys and/or with advanced high strength steels (AHSS) such as dual-phase (DP), twinning induced plasticity (TWIP), and transformation induced plasticity (TRIP) steels. The main objective of this work is to experimentally and numerically evaluate the macro-performance of the automotive TWIP sheet in conjunction with springback. In order to characterize the mechanical properties, simple tension and tension-compression tests were performed to determine anisotropic properties, as well as the Bauschinger, transient, and permanent softening behaviors during reverse loading. For numerical simulations, the anisotropic yield function Yld2000-2d was utilized along with the combined isotropic-kinematic hardening law based on the modified Chaboche model. Springback verification was performed for the unconstrained cylindrical bending and 2D draw bending tests.

引用

页码：637 / 647

页数：11

共 23 条

[1] Plane stress yield function for aluminum alloy sheets - part 1: theory [J].

Barlat, F ;

Brem, JC ;

Yoon, JW ;

Chung, K ;

Dick, RE ;

Lege, DJ ;

Pourgoghrat, F ;

Choi, SH ;

Chu, E .

INTERNATIONAL JOURNAL OF PLASTICITY, 2003, 19 (09) :1297-1319

[2] TIME-INDEPENDENT CONSTITUTIVE THEORIES FOR CYCLIC PLASTICITY [J].

CHABOCHE, JL .

INTERNATIONAL JOURNAL OF PLASTICITY, 1986, 2 (02) :149-188

[3] ON SOME MODIFICATIONS OF KINEMATIC HARDENING TO IMPROVE THE DESCRIPTION OF RATCHETTING EFFECTS [J].

CHABOCHE, JL .

INTERNATIONAL JOURNAL OF PLASTICITY, 1991, 7 (07) :661-678

[4] Spring-back evaluation of automotive sheets based on isotropic-kinematic hardening laws and non-quadratic anisotropic yield functions - Part I: theory and formulation [J].

Chung, K ;

Lee, MG ;

Kim, D ;

Kim, CM ;

Wenner, ML ;

Barlat, F .

INTERNATIONAL JOURNAL OF PLASTICITY, 2005, 21 (05) :861-882

[5]

CHUNG KS, 2009, INT J SOLIDS STRUCTU

[6] High strength Fe-Mn-(Al, Si) TRIP/TWIP steels development -: properties -: application [J].

Grässel, O ;

Krüger, L ;

Frommeyer, G ;

Meyer, LW .

INTERNATIONAL JOURNAL OF PLASTICITY, 2000, 16 (10-11) :1391-1409

[7]

He N., 1996, NUMISHEET '96, P308

[8]

*HIBB KARLSS SOR I, 2005, ABAQUS US MAN VERS 6

[9]

Jung JK, 2008, J KOREAN INST MET MA, V46, P627

[10]

Kawaguchi T., 1994, J JPN SOC TECHNOL PL, V35, P125

← 1 2 3 →