Identification of sheet metal hardening for large strains with an in-plane biaxial tensile test and a dedicated cross specimen

被引：58

作者：

Liu, Wei ^{[1
]}

Guines, Dominique ^{[1
]}

Leotoing, Lionel ^{[1
]}

Ragneau, Eric ^{[1
]}

机构：

[1] Univ Europeenne Bretagne, INSA LGCGM EA 3913, F-35708 Rennes 7, France

来源：

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 2015年 / 101卷

关键词：

Biaxial tensile test; Cruciform specimen; Hardening law; Sheet metal forming; Anisotropic yield criterion; BEHAVIOR; STRESS; TEMPERATURE; THICKNESS;

D O I：

10.1016/j.ijmecsci.2015.08.022

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this work, an in-plane biaxial tensile test of cruciform specimen is performed to identify the hardening behaviour of metallic sheets under large strains. Firstly, an optimal shape of the specimen is suggested. Then, a biaxial tensile test is carried out for an aluminium alloy AA5086. Experimental forces on the two axes of the specimen are measured during the test and strains in the central area of the specimen are post-treated by means of Digital Image Correlation (DIC) technique. Finally, by considering different yield criteria, the associated hardening laws are identified thanks to an inverse procedure based on a Finite Element (FE) modelling of the biaxial tensile test and on the experimental data mentioned above. The identified biaxial flow curves are then compared with the ones from the classical uniaxial tensile test. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：387 / 398

页数：12

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