Springback prediction of magnesium alloy sheet with nonlinear combined hardening

ZHAO Xiao-di; YUE Zhen-ming; GAO Jun; CHU Xing-rong

doi:10.13374/j.issn2095-9389.2017.04.010

Volume 39 Issue 4

Apr. 2017

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ZHAO Xiao-di, YUE Zhen-ming, GAO Jun, CHU Xing-rong. Springback prediction of magnesium alloy sheet with nonlinear combined hardening[J]. Chinese Journal of Engineering, 2017, 39(4): 550-556. doi: 10.13374/j.issn2095-9389.2017.04.010

Citation:

ZHAO Xiao-di, YUE Zhen-ming, GAO Jun, CHU Xing-rong. Springback prediction of magnesium alloy sheet with nonlinear combined hardening[J]. Chinese Journal of Engineering, 2017, 39(4): 550-556. doi: 10.13374/j.issn2095-9389.2017.04.010

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Springback prediction of magnesium alloy sheet with nonlinear combined hardening

doi: 10.13374/j.issn2095-9389.2017.04.010

School of Electrical and Information Engineering, Shandong University at Weihai, Weihai 264209, China

Received Date: 2016-10-11

Abstract

Abstract

Springback is regarded as one of the main defects that occur in sheet-metal forming processes. Therefore, improving its prediction accuracy, especially under highly nonlinear conditions, is important for researchers. In this paper, constitutive equations that consider the isotropic hardening, kinematic hardening, and distortional hardening are proposed for magnesium alloy sheet. The work hardening and springback behaviors of 0.8-mm-thick AZ31B magnesium alloy sheet were investigated and simulated. The AZ31B specimen was subjected to a bending process after the pre-tension deformation, which aided in the observation of its springback behavior under nonlinear loading paths. Simulations were conducted using ABAQUS-Explicit (Vumat) and ABAQUS-Implicit (Umat). Comparisons between the experimental and numerical results demonstrate the strong influence of the kinematic hardening on the springback prediction of magnesium alloy sheet.
- magnesium alloy sheet,
- springback,
- Bauschinger effect,
- kinematic hardening,
- induced anisotropy

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References(20)

References

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