1. School of Software, North University of China, Taiyuan 030051, Shanxi, China 2. School of Mathematics and Statistics, Zhengzhou University, Zhengzhou 450001, Henan, China 3. School of Materials Science and Engineering, North University of China, Taiyuan 030051, Shanxi, China
Constitutive Models for Compressive Deformation of AZ80 Magnesium Alloy under Multiple Loading Directions and Strain Rates
1. School of Software, North University of China, Taiyuan 030051, Shanxi, China 2. School of Mathematics and Statistics, Zhengzhou University, Zhengzhou 450001, Henan, China 3. School of Materials Science and Engineering, North University of China, Taiyuan 030051, Shanxi, China
ժҪ Two constitutive models, the modified Johnson-Cook model and the logarithm linear relation model based on empirical approach and data analysis, were presented to illustrate compressive deformation of magnesium alloys AZ80 under multiple loading directions and strain rates. The results of stress-strain curve analysis and sensitivity index analysis suggested that the stress held large fluctuations in loading direction of 90��. Model testing signified that the logarithm linear relation model was more proper than the modified Johnson-Cook model in view of relative mean square error and correlation coefficients. Moreover, numerical simulation building on established models also indicated that the logarithm linear model is more precise than the modified Johnson-Cook model.
Abstract��Two constitutive models, the modified Johnson-Cook model and the logarithm linear relation model based on empirical approach and data analysis, were presented to illustrate compressive deformation of magnesium alloys AZ80 under multiple loading directions and strain rates. The results of stress-strain curve analysis and sensitivity index analysis suggested that the stress held large fluctuations in loading direction of 90��. Model testing signified that the logarithm linear relation model was more proper than the modified Johnson-Cook model in view of relative mean square error and correlation coefficients. Moreover, numerical simulation building on established models also indicated that the logarithm linear model is more precise than the modified Johnson-Cook model.
����:
Xu-qing CHANG,Li-ying ZHANG,Yong-biao YANG,Jing-li REN. Constitutive Models for Compressive Deformation of AZ80 Magnesium Alloy under Multiple Loading Directions and Strain Rates[J]. �й������ڿ���, 2016, 23(1): 64-68.
Xu-qing CHANG,Li-ying ZHANG,Yong-biao YANG,Jing-li REN. Constitutive Models for Compressive Deformation of AZ80 Magnesium Alloy under Multiple Loading Directions and Strain Rates. Chinese Journal of Iron and Steel, 2016, 23(1): 64-68.
2016, Vol. 23 
