节点文献
深小锥孔挤压成形极限变形程度理论判据建立
Theory research on the maximum reduction of deep tine taper hole formed by open-die cold extrusion
【摘要】 给出了深小锥孔件开式冷挤压成形时极限变形程度的定义,通过对深小锥孔开式冷挤压成形时的变形分析,建立了变形区非稳态连续速度场,利用上限原理得到了极限变形程度的理论判据。
【Abstract】 Maximum reduction when deep tine taper hole part is formed by open-die extrusion is defined. Through analysis of its forming characteristic, unstable continuity velocity field is established. The theoretical criterion of the maximum reduction is obtained by means of upper-bound method.
【关键词】 深小锥孔;
开式冷挤压;
非稳态连续速度场;
极限变形程度;
上限法;
【Key words】 deep tine taper hole; open-die extrusion; unstable continuity velocity field; maximum reduction; upper-bound method;
【Key words】 deep tine taper hole; open-die extrusion; unstable continuity velocity field; maximum reduction; upper-bound method;
【基金】 河北省自然科学基金资助项目(E2004000296)
- 【文献出处】 河北科技大学学报 ,Journal of Hebei University of Science and Technology , 编辑部邮箱 ,2005年01期
- 【分类号】TG376
- 【被引频次】4
- 【下载频次】78