Modeling and characterization on electroplastic effect during dynamic deformation of 5182-O aluminum alloy
The coupling effects of electrical pulse,temperature,strain rate,and strain on the flow behavior and plasticity of 5182-O aluminum alloy were investigated and characterized.The isothermal tensile test and electrically-assisted isothermal tensile test were performed at the same temperature,and three typical models were further embedded in ABAQUS/Explicit for numerical simulation to illustrate the electroplastic effect.The results show that electric pulse reduces the deformation resistance but enhances the elongation greatly.The calibration accuracy of the proposed modified Lim-Huh model for highly nonlinear and coupled dynamic hardening behavior is not much improved compared to the modified Kocks-Mecking model.Moreover,the artificial neural network model is very suitable to describe the macromechenical response of materials under the coupling effect of different variables.
machine learningaluminium alloyelectroplastic effectcoupling effectfinite element analysis
尚宏春、王松臣、娄燕山
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西安交通大学机械工程学院,西安 710049
机器学习 铝合金 电塑性效应 耦合效应 有限元分析
National Natural Science Foundation of ChinaNational Natural Science Foundation of China
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