Experimental and theoretical investigation of compression of a cylinder using a rotating platen

被引：13
|
作者：
Ma, X [1 ]
Barnett, MR
Kim, YH
机构：
[1] Deakin Univ, Sch Engn & Technol, Geelong, Vic 3217, Australia
[2] Pusan Natl Univ, Sch Mech Engn, ERC, NSDM, Pusan 609735, South Korea
来源：
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 2003年 / 45卷 / 10期
关键词：
compression; rotating dies; barreling; upper bound analysis;
D O I：
10.1016/j.ijmecsci.2003.12.003
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A rig was constructed to carry out compression of an aluminum cylinder with a monotonically rotating platen. The tests carried out showed that the compression load decreased and the side wall bulge severity reduced when the die was rotated. Not all the work supplied by the rotating dies was transferred to the work-piece; circumferential slippage was frequently observed at the die/material interface. This slippage was quantified by comparing measurements made during interrupted testing with the angular velocity of the die. A compound velocity field based on an exponential cusp description of the barreling was employed in an upper bound analysis. An approximate analytical solution was obtained for the degree of barreling and the compression pressure. The model is able to reproduce the decrease in barreling and compression loads with increasing die rotation. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1717 / 1737
页数：21
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