铝合金圆管两道次拉拔成矩形管的有限元模拟
Finite Element Simulation of Two-pass Drawing Process of an Aluminum Tube from Circular to Rectangular Section
摘 要
针对铝合金管由圆形截面变形至矩形截面的两道次拉拔过程,相应建立了空拉拔和带芯头拉拔工艺的运动模型及弹塑性有限元模型,并进行了模拟分析.结果表明：当模具半角α2＝11°时,拉拔载荷最小;空拉拔工艺的模孔定径带优化设计为中拱角度β=178°,可以有效消除失稳现象;残余应力值沿着矩形的周向轮廓波动明显,最大差值达3.06 MPa;回弹应变沿着矩形的周向轮廓有所波动,最大回弹应变量0.000 7,最小0.000 1;模拟结果与试验结果比较吻合.
铝合金
有限元
残余应力
two-pass drawing
aluminum alloy
finite element(FE)
residual stress
Abstract
The dynamic models and elasto-plastic finite element models of the non-plug and with-plug processes were established for the two-pass drawing process of an aluminium tube from circular to rectangular section,and then the simulation was performed.The results revealed that the drawing load touched bottom when the semi-die angle α2=11°.The sizing section of drawing die got optimized with angle β=178°,which eliminated instability.The residual stress waved along rectangle sides,and the maximal difference was 3.06 MPa.The spring-back strain also waved along rectangle sides,and the maximum was 0.000 7 and the minimum 0.000 1.The simulation results got good testing verifying.
中图分类号 TG356.11
所属栏目 物理模拟与数值模拟
基金项目 国家科技部技术创新资助项目(07C26215110824)
收稿日期 2007/7/24
修改稿日期 2008/3/15
网络出版日期
作者单位点击查看
备注权国政(1980-),男,河南南阳人,讲师,博士.
引用该论文: QUAN Guo-zheng,ZHOU Jie,TONG Ying. Finite Element Simulation of Two-pass Drawing Process of an Aluminum Tube from Circular to Rectangular Section[J]. Materials for mechancial engineering, 2008, 32(7): 70～74
权国政,周杰,佟莹. 铝合金圆管两道次拉拔成矩形管的有限元模拟[J]. 机械工程材料, 2008, 32(7): 70～74
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】Juneja B L,Prakash R.An analysis for drawing and extrusion of polygonal sections[J].Int J Mach Tool Des Res,1975,15:1-30.
【2】Basily B B,Sansome D H.Some theoretical considerations for the direct drawing of section rod from round bar[J].Int J Mech Sci,1976,18:201-208.
【3】Boür C R,Webster Jr W D.Direct upper-bound solution and finite element approach to round-to-square drawing[J].Trans ASME,1985,107:254-260.
【4】Brücker M,Keller D,Reissner J.Computer aided drawing of profiles from round and square bar[J].Ann CIRP,1988,37:247-250.
【5】Yoshida K,Yamada S,Suzuki S,et al.Mechanics of deformation in round-to-hexagon drawing by FEM[J].Proc Jpn Soc Tech Plast,1994,45:161-164.
【6】Kim Y C,Kim B M.A study on the corner filling in the drawing of a rectangular rod from a round bar[J].Int J Mach Tool Manuf,2000,40:2099-2117.
【2】Basily B B,Sansome D H.Some theoretical considerations for the direct drawing of section rod from round bar[J].Int J Mech Sci,1976,18:201-208.
【3】Boür C R,Webster Jr W D.Direct upper-bound solution and finite element approach to round-to-square drawing[J].Trans ASME,1985,107:254-260.
【4】Brücker M,Keller D,Reissner J.Computer aided drawing of profiles from round and square bar[J].Ann CIRP,1988,37:247-250.
【5】Yoshida K,Yamada S,Suzuki S,et al.Mechanics of deformation in round-to-hexagon drawing by FEM[J].Proc Jpn Soc Tech Plast,1994,45:161-164.
【6】Kim Y C,Kim B M.A study on the corner filling in the drawing of a rectangular rod from a round bar[J].Int J Mach Tool Manuf,2000,40:2099-2117.
相关信息
