EXPERIMENTAL MEASURE OF PARAMETERS THE JOHNSON-COOK MATERIAL MODEL OF EXTRUDED Mg-Gd-Y SERIES ALLOY

摘要：

INTRODUCTION The Johnson-Cook material model is one of the most effective rigid-plastic hardening models, which can reflect both the strain rate hardening effect and the thermal softening effect imposed by elevated temperature 1. Nowadays, the Johnson-Cook material model is being extensively used in the numerical simulation. The accuracy of the undetermined parameters for this model is critical for the reliability of the numerical simulation results. In the current work, five parameters for the Johnson-Cook material model of the as-extruded Mg-Gd-Y series alloy (Mg-10Gd-2Y-0.5Zr, wt.%) were determined by combining the quasi-static tests on Instron 1251 and Hopkinson bar experiment at room and elevated temperatures.

作者: FAN Ya-fu ZHAO Bao-rong WANG Qu-dong NING Jun-sheng CHEN Jie

作者单位: Yantai Branch of No.52 Institute of China Ordnance Industry Group, Yantai 264003, Shandong, China The Ningbo Branch of Ordnance Science Institude of China, Ningbo 315103,Zhejiang,China Light Alloy Net Forming National Engineering Research Center, Shanghai Jiaotong University, Shanghai Physics department of Yantai University,Yantai 264005, Shandong, China

会议类型: 国际会议

会议名称: 25th International Symposium on Ballistics(第25届国际弹道会议)

会议地点: 北京

会议语种:英文

页码: 1448-1452

在线出版日期: 2010-05-17（万方平台首次上网日期，不代表论文的发表时间）