| 通道宽度比对侧向挤压坯料变形的影响 |
| |
| 引用本文： | 石凤健,许涛,周应国,王芦笙,王雷刚.通道宽度比对侧向挤压坯料变形的影响[J].稀有金属材料与工程,2010,39(Z1). |
| |
| 作者姓名： | 石凤健 许涛 周应国 王芦笙 王雷刚 |
| |
| 作者单位： | 1. 江苏科技大学,先进焊接技术省级重点实验室,江苏,镇江,212003
2. 江苏大学,江苏,镇江,212013 |
| |
| 基金项目： | 江苏科技大学本科生创新计划专项经费资助项目 |
| |
| 摘 要： | 采用刚塑性有限元研究了不同通道宽度比侧向挤压时材料的变形分布、载荷及速度场。结果表明,随通道宽度比的增加,等效应变较大的区域逐渐由坯料的上部转到下部。宽度比为2时,通道拐角外侧坯料存在少量变形死区,使坯料下部变形严重。随通道宽度比的降低,坯料中变形较均匀的区域减小,拐角处间隙增大。当宽度比为0.67时,坯料产生明显畸变。挤压过程中的最大载荷随通道宽度比增加而增加。
|
| 关 键 词： | 侧向挤压 通道宽度比 有限元法 等效应变 |
Effect of Channel Width Ratio on the Billet Deformation during Lateral Extrusion |
| |
| Shi Fengjian,Xu Tao,Zhou Yingguo,Lu Sheng,Wang Leigang.Effect of Channel Width Ratio on the Billet Deformation during Lateral Extrusion[J].Rare Metal Materials and Engineering,2010,39(Z1). |
| |
| Authors: | Shi Fengjian Xu Tao Zhou Yingguo Lu Sheng Wang Leigang |
| |
| Affiliation: | Shi Fengjian1,Xu Tao1,Zhou Yingguo1,Lu Sheng1,Wang Leigang2 (1.Provincial Key Lab of Advanced Welding Technology,Jiangsu University of Science , Technology,Zhenjiang 212003,China) (2.Jiangsu University,Zhenjiang 212013,China) |
| |
| Abstract: | Effective strain distribution,load and velocity field were analyzed by rigid-plastic finite element method for different channel width ratio.The results show that the large plastic deformation region is transferred from top surface to bottom surface with increasing the channel width ratio.When it increases to 2,the emergence of dead zone leads to the severe plastic deformation along the bottom surface of the billet.With the decrease of channel width ratio,the fraction of more uniform deformation region alon... |
| |
| Keywords: | lateral extrusion channel width ratio finite element method effective strain |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
