Identification of post-necking stress-strain curve for sheet metals by inverse method

Zhao Kunmin; Wang Limin; Chang Ying; Yan Jianwen

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Identification of post-necking stress-strain curve for sheet metals by inverse method

机译：逆向法识别钣金颈缩后的应力应变曲线

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Simulation of sheet metal forming requires the flow curve (i.e. the true stress-strain relation) over large strains. This paper presents a method for obtaining the flow curve of sheet metals over a large range of strain through the combination of simple tensile test and finite element analyses. The appropriate finite element model for accurate simulation of the anisotropic plastic deformation during diffuse necking was determined. Different hardening functions were evaluated for their capabilities in approximating the entire flow stress curves up to localized necking. A modified Hockett-Sherby function was proposed and its performance was demonstrated. (C) 2015 Elsevier Ltd. All rights reserved.

机译：钣金成形的模拟需要大应变下的流动曲线（即真实的应力-应变关系）。本文提出了一种通过简单的拉伸试验和有限元分析相结合的方法来获得大应变范围内的钣金流动曲线的方法。确定了用于精确模拟扩散颈缩过程中各向异性塑性变形的适当有限元模型。对不同的硬化功能进行了评估，以评估整个流动应力曲线直至局部颈缩的能力。提出了改进的Hockett-Sherby函数，并证明了其性能。（C）2015 Elsevier Ltd.保留所有权利。

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来源
《Mechanics of materials》 |2016年第1期|107-118|共12页
作者
Zhao Kunmin; Wang Limin; Chang Ying; Yan Jianwen;
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作者单位

Dalian Univ Technol, Sch Automot Engn, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China;

Dalian Univ Technol, Sch Automot Engn, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China;

Dalian Univ Technol, Sch Automot Engn, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China;

Hefei Univ Technol, Ind & Equipment Technol Inst, Hefei 230601, Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Stress-strain curve; Stress triaxiality; Tensile test; Necking; Inverse method;

机译：应力-应变曲线;应力三轴性;拉伸试验;颈缩;反求法;

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1. Identification of Post-necking Tensile Stress-Strain Behavior of Steel Sheet: An Experimental Investigation Using Digital Image Correlation Technique [J] . Paul Surajit Kumar, Roy Satish, Sivaprasad S., Journal of Materials Engineering and Performance . 2018,第11期

机译：钢板颈后拉伸应力 - 应变行为的识别：使用数字图像相关技术的实验研究
2. Stress-strain curves of metallic materials and post-necking strain hardening characterization: A review [J] . Tu Shengwen, Ren Xiaobo, He Jianying, Fatigue & Fracture of Engineering Materials & Structures . 2020,第1期

机译：金属材料的应力-应变曲线和颈缩后的应变硬化表征
3. Identification of post-necking strain hardening behavior of thin sheet metals from image-based surface strain data in uniaxial tension tests [J] . Wang Lin, Tong Wei International Journal of Solids and Structures . 2015,第Null期

机译：从单轴拉伸试验中基于图像的表面应变数据确定薄金属板的颈缩后应变硬化行为
4. Advances in Post-necking Flow Curve Identification of Sheet Metal through Standard Tensile Testing [C] . Sam Coppieters, Steven Cooreman, Dimitri Debruyne, International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes . 2014

机译：通过标准拉伸检测缩小封口流动曲线识别金属板的进展
5. Identification of interfacial heat transfer between molten metal and green sand by inverse heat conduction method. [D] . Ke, Quanpeng. 2000

机译：逆热传导法识别熔融金属与生砂之间的界面传热。
6. Analysis of Forming Limits in Sheet Metal Forming with Pattern Recognition Methods. Part 2: Unsupervised Methodology and Application [O] . Christian Jaremenko, Emanuela Affronti, Andreas Maier, 2018

机译：使用模式识别方法分析钣金成形中的成形极限。第2部分：无监督方法和应用
7. Advances in post-necking flow curve identification of sheet metal through standard tensile testing [O] . Coppieters Sam, Cooreman Steven, Debruyne Dimitri, 2014

机译：通过标准拉伸试验在钣金颈缩后流动曲线识别方面的进展

Identification of post-necking stress-strain curve for sheet metals by inverse method

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