Variation of elastic modulus during plastic deformation and its influence on springback

被引：116

作者：

Yu, Hai Yan ^{[1
]}

机构：

[1] Tongji Univ, Sch Automot Engn, Shanghai 200092, Peoples R China

来源：

MATERIALS & DESIGN | 2009年 / 30卷 / 03期

基金：

中国国家自然科学基金;

关键词：

HIGH-STRENGTH STEEL; RETAINED AUSTENITE; VOLUME FRACTION; TRIP STEELS; STRAIN; TRANSFORMATION; STABILITY;

D O I：

10.1016/j.matdes.2008.05.064

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Inelastic recovery behavior of TRIP steels during unloading has been investigated by uniaxial tensile tests. Unloading stress-strain curves obtained under different plastic strain indicated that the percentage of inelastic recovery to the total recovery increased with plastic deformation. An empirical expression describing the relation of elastic modulus with plastic strain has been proposed. Then the expression was implemented into LS-DYNA software to simulate U-channel springback. Comparison showed that springback simulation with a varied elastic modulus was more precise than that with a constant elastic modulus. Inelastic recovery needs be considered in order to improve springloack simulation precision. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：846 / 850

页数：5

共 21 条

[1] Numerical and experimental evaluation of springback in advanced high strength steel [J].

Andersson, A. .

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2007, 16 (03) :301-307

[2] Change of Young's modulus of cold-deformed pure iron in a tensile test [J].

Benito, JA ;

Manero, JM ;

Jorba, J ;

Roca, A .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2005, 36A (12) :3317-3324

[3]

Chester F Jatczak, 1980, SAE800426, P1657

[4] Inelastic effects on springback in metals [J].

Cleveland, RM ;

Ghosh, AK .

INTERNATIONAL JOURNAL OF PLASTICITY, 2002, 18 (5-6) :769-785

[5] The effect of strain-induced martensitic transformation on mechanical properties of TRIP steel [J].

Dan, W. J. ;

Li, S. H. ;

Zhang, W. G. ;

Lin, Z. Q. .

MATERIALS & DESIGN, 2008, 29 (03) :604-612

[6] Experimental and numerical studies of springback in air v-bending process for cold rolled TRIP steels [J].

Fei, Dongye ;

Hodgson, Peter .

NUCLEAR ENGINEERING AND DESIGN, 2006, 236 (18) :1847-1851

[7] Microstructural effects on the springback of advanced high-strength steel [J].

Gan, Wei ;

Babu, S. S. ;

Kapustka, Nick ;

Wagoner, Robert H. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2006, 37A (11) :3221-3231

[8]

Hansel AHC, 1998, SIMULATION OF MATERIALS PROCESSING: THEORY, METHODS AND APPLICATIONS, P373

[9]

LEDBETTER HM, 1988, MAT SCI ENG A-STRUCT, V101, P87, DOI 10.1016/0921-5093(88)90053-6

[10] Effects of volume fraction and stability of retained austenite on formability in a 0.1C-1.5Si-1.5Mn-0.5Cu TRIP-aided cold-rolled steel sheet [J].

Lee, CG ;

Kim, SJ ;

Lee, TH ;

Lee, SH .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 371 (1-2) :16-23

← 1 2 3 →