Influence of Different Hardening Model for the Simulating Results of the Aluminum Alloy Sheet Stamping

doi:10.3901/JME.2017.22.057

Abstract

Abstract: Influence of the different plastic deformation hardening model of 5182-O aluminum alloy sheet stamping effected on simulation results is investigated. The curve of stress-strain relationship is got by the uniaxial tensile test. Based on Hollomom, Krupskowsky and Power equation the plastic deformation hardening model materials is obtained with curve fitting at room temperature. The stamping experiments and finite element simulation analysis of thickness for 1.5 mm and 0.85 mm of 5182 sheet are processed. The contrastive analysis of stamping experiment and simulation results are made. The experimental and numerical results show that forming force for 42.95 kN and maximum drawing depth for 30.58 mm with the sheet thickness for 1.5 mm, the maximum forming force for 41.5 kN based on Power equation are closed to the experiment result, the drawing depth for 30.546 mm and thickness distribution based on Hollomom equation is closed to the experiment result. The experimental and numerical results show that forming force for 34.47 kN and maximum drawing depth for 33.792 mm with the sheet thickness for 0.85 mm, the maximum forming force for 34.27 kN based on Power equation are closed to the experiment result, the drawing depth for 33.636 mm and thickness distribution based on Hollomom equation is closed to the experiment result. Simulation results of aluminum alloy stamping is processed with three kinds of hardening model. Influence of the different hardening model effected on simulation results is obtained by comparing with the sheet stamping experiment of aluminum alloy. Furthermore, the theoretical guidance is provided for research and analysis of the forming process for the automotive aluminum alloy parts.

Key words: aluminum alloy, finite element simulation, hardening model, stamping

CLC Number:

TG386

JIN Feixiang, ZHONG Zhiping, LI Fengjiao, MENG Hui. Influence of Different Hardening Model for the Simulating Results of the Aluminum Alloy Sheet Stamping[J]. Journal of Mechanical Engineering, 2017, 53(22): 57-66.

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