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Materials 2018, 11(2), 248; doi:10.3390/ma11020248

Optimized Calibration Procedure of the Damage Parameters of AA6082-T6 Sheets

1
School of Mechanical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang 212000, China
2
Department of Materials Engineering, KU Leuven, Campus Gent, Gebroeders De Smetstraat 1, 9000 Gent, Belgium
3
School of Mechanical Engineering, Xi’an Jiaotong University, Xianning West Road 28, Xi’an 710049, China
*
Author to whom correspondence should be addressed.
Received: 5 January 2018 / Revised: 31 January 2018 / Accepted: 1 February 2018 / Published: 6 February 2018
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Abstract

The constitutive equation of AA6082-T6 sheets is investigated by an extended Rousselier damage model. Previous research is mainly comprised of single-pull test specimens, notched tensile specimens, tensile specimens with a hole, and shear specimens. To decrease the natural material errors, a new specimen is used. In this paper, a clinched joint is regarded as a specimen to calibrate the initial void volume fraction k ω and the shear damage parameter f 0 by using the orthogonal analysis method, which can reduce the simulation times and accuracy. It also reveals that the initial void volume fraction f 0 affects the void volume fraction in the neck and the groove of the clinched joint, and the shear damage parameter k ω affects just the void volume fraction f in the neck of the clinched joint. It checks the force-displacement curve, shape of the clinched joint, and the fracture location, and approves that these damage parameters can describe the deformation process, fracture location, and shape of the clinched joint. View Full-Text
Keywords: shear damage parameter; the initial void volume fraction; orthogonal analysis shear damage parameter; the initial void volume fraction; orthogonal analysis
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Xu, F.; Zhang, H.; Zhao, S.; Chen, C.; Cao, M.; Chen, W. Optimized Calibration Procedure of the Damage Parameters of AA6082-T6 Sheets. Materials 2018, 11, 248.

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