A Finite Element Simulation of NiTi Alloy during Equal Channel Angular Extrusion
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2010年第5期
论文作者：王伟之 程先华
文章页码：824 - 828
摘 要：Particle tracking method is given to analyze the equal channel angular extrusion （ECAE） process of NiTi alloy in non-isothermal condition. The distribution of effective strain, effective stress, the temperature, and strain rate of selected particle tracking points is analyzed respectively. The influence of friction factor is also discussed. The experimental results show that under non-isothermal condition, distribution of strain, stress, strain rate and temperature are inconsistent on relative plane. Final result indicates that distribution of effective strain on xz plane is obviously different from those of isothermal condition; load predication reveals friction factor in this mechanism made little influence on the gross of load.
王伟之，程先华
School of Mechanical Engineering, Shanghai Jiaotong University
摘 要：Particle tracking method is given to analyze the equal channel angular extrusion （ECAE） process of NiTi alloy in non-isothermal condition. The distribution of effective strain, effective stress, the temperature, and strain rate of selected particle tracking points is analyzed respectively. The influence of friction factor is also discussed. The experimental results show that under non-isothermal condition, distribution of strain, stress, strain rate and temperature are inconsistent on relative plane. Final result indicates that distribution of effective strain on xz plane is obviously different from those of isothermal condition; load predication reveals friction factor in this mechanism made little influence on the gross of load.
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