Analysis and Design of the Prestressed Cold Extrusion Die |
| |
Authors: | HT Yeo Y Choi KD Hur |
| |
Affiliation: | (1) Department of Mechanical Engineering, Graduate School, Dong-eui University, KR;(2) Division of Mechanical and Automation Engineering, Kyungnam University, 449 Wolyoung-dong, Masan, Kyungnam 631–701, Korea, KR;(3) Department of Mechanical Engineering, Dong-eui University, Kaya-dong San24, Pusanjin-ku, Pusan 614–714, Korea, KR |
| |
Abstract: | The stress analysis and design of a prestressed cold extrusion die with stress rings has been carried out in this study. The
calculation of the contact pressure on the interface between the die insert and stress ring is included. In this method, an
elastic finite-element method and Lame’s equation are used for the analyses of the die insert and the stress ring, respectively.
The cold extrusion process has been simulated by the rigid finite-element method. Using these results, stress analysis has
been performed for shrink fitting and during cold extrusion by using the present method. According to the variation of interferences
and diameter ratios of the die with one and two stress rings, the maximum effective stress has been evaluated. In the results,
interferences and diameters were determined by the minimisation of the maximum effective stress of the die insert. A comparison
of the maximum effective stress between the proposed design and the conventional design has been discussed. |
| |
Keywords: | :Cold extrusion Contact pressure Diameter ratios Interference Lamé's equation Maximum effective stress Pre-stressed die Principle of superposition |
本文献已被 SpringerLink 等数据库收录! |
|