Upper-bound Analysis for Change-channel Angular Extrusion

摘要：

Deformation of the material during 90° change-channel angular extrusion (CCAE) process is analyzed using upper-bound theorem. The mathematical model was established which includes the effect of friction between the sample and inner surface of the die, radius of inner and outer corner of the die, and the dead metal zone on the deformation patterns during change-channel angular extrusion deformation process. The model of parameters is explored in relation to the deformation of the material during the change-channel angular extrusion process. Results showed that the extrusion force increased with the increase of extrusion ratio (a2/b2), friction factor m, out corner and the reduce of inner corner. Further directions for progress in upper-bound analysis in change-channel angular extrusion deformation process are outlined.

关键词： Change-channel Angular Extrusion Upper-bound Analysis Mathematical Model

作者: Tianmo LIU Yu LIU Liwei LU Fusheng PAN

作者单位: National Engineering Research Center for Magnesium Alloys,Chongqing University, Chongqing, 400044, China College of Materials Science and Engineering,Chongqing University, Chongqing, 400045, China

会议类型: 国际会议

会议名称: 2008年中美材料国际研讨会

会议地点: 重庆

会议语种:英文

页码: 838-843

在线出版日期: 2008-06-09（万方平台首次上网日期，不代表论文的发表时间）