连续挤压变形力学模型与接触应力分布规律

中国有色金属学报, 2007, 17(2): 283-289.

连续挤压变形力学模型与接触应力分布规律

樊志新 ^1, , 宋宝韫 ^2, , 刘元文 ^3, , 运新兵 ^4,

1.大连交通大学,材料科学与工程学院,大连,116028

2.大连交通大学,材料科学与工程学院,大连,116028

3.大连交通大学,材料科学与工程学院,大连,116028

4.大连交通大学,材料科学与工程学院,大连,116028

基金项目: 国家自然科学基金(50635020)

关键词：金属成形 , 连续挤压 , 应力分布

Deformation model and stress distribution of continuous extrusion process

在连续挤压技术研究的基础上,通过观测挤压轮槽金属的变形形貌,提出了"五分区"的连续挤压变形过程描述模型,构成了连续挤压轮沟槽变形区系统、完整、准确的表征.根据各分区的变形特点,利用塑性力学理论得出接触应力的解析表达式,讨论连续挤压变形区接触应力的分布特点与规律.通过深入分析,得出了个分区关键参数的设计准则与确定方法,探讨了提高挤压力的措施,最后通过与实验结果的比较验证了其工程应用价值.

参考文献

[1]	Harper S.Special extrusion processes for non-ferrous metals[J].The Metallurgist and Materials Technologist,1980:257-260.
[2]	Hawkes D J;Morgan R E .Conform extrusion:current method and capabilities[J].Wire Ind,1991,58:323-326.
[3]	宋宝韫,樊志新,陈吉光,刘元文,贾春博.铜、铝连续挤压技术特点及工业应用[J].稀有金属,2004(01):257-261.
[4]	Tirosh J;Grossman G et al.Theoretical and experimental study of the COMFORM metal forming process[J].Transactions of the ASME,1979,101(03):116-120.
[5]	LI Ming-dian;SONG Bao-yun.Study of the velocity field and the stress field in the CONFORM[A].北京,1993:668-673.
[6]	钟毅.连续挤压技术及应用[M].北京:冶金工业出版社,2004
[7]	Y.H.Kim;J.R.Cho .A study of the application of upper bound method to the CONFORM process[J].Journal of Materials Processing Technology,2000(1/3):153-157.
[8]	张新宇 .铝包钢线连续包覆挤压力的上限计算[J].塑性工程学报,1999,16:10-16.
[9]	J.R. Cho;H.S. Jeong .CONFORM process: surface separation, curling and process characteristics to the wheel diameter[J].Journal of Materials Processing Technology,2003(1/3):217-226.
[10]	J. R. Cho;H. S. Jeong .Parametric investigation on the curling phenomenon in CONFORM process by three-dimensional finite element analysis[J].Journal of Materials Processing Technology,2001(1):53-60.
[11]	J. Lu;N. Saluja;A. L. Riviere;Y. Zhou .Computer modeling of the continuous forming extrusion process of AA6061 alloy[J].Journal of Materials Processing Technology,1998(1/3):200-212.
[12]	宋宝韫,李明典,贾春博,储灿东.连续包覆型腔塑变区速度场分析与几何参数确定[J].中国机械工程,1999(03):314-316.
[13]	Lee J M .Effects of chamber shapes of porthole die on elastic deformation and extrusion process in condenser tube extrusion[J].Materials & Design,2005,26:327-336.
[14]	Reinikainen T et al.Finite-element analysis of copper extrusion processes[J].JOURNAL OF MATERIALS PROCESSING TECHNOLOGY,1992,34:101-107.
[15]	Slater H K .Development experience with the COMFORM continuous extrusion process on copper[J].Wire J,2000,16:76-82.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网

连续挤压变形力学模型与接触应力分布规律

Deformation model and stress distribution of continuous extrusion process

参考文献