Single-patch surfaces for tool shape design and finite element analysis of hot extrusion

This source preferred by Lihua You, Jian Jun Zhang, Jian Jun Zhang and Lihua You

Authors: You, L.H., Hu, J.H., Shi, Y.H. and Zhang, J.J.

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TGJ-4BWYFX9-1&_user=1682380&_coverDate=07%2F01%2F2004&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000011378&_version=1&_urlVersion=0&_userid=1682380&md5=572fef7d9aa5f56f2c832ea8c7149598

Journal: Journal of Materials Processing Technology

Volume: 150

Pages: 62-69

ISSN: 0924-0136

DOI: 10.1016/j.jmatprotec.2004.01.021

In this paper, a new mathematical representation of single-patch surfaces is reported. With this representation, complex tool shapes of metal forming can be described with a single surface patch which is prescribed by the boundary of the die at its entry and exit. For non-linearly converging die-surfaces, the die shapes can be effectively altered by changing the coefficients of the tangential boundary conditions. Using the obtained die-surfaces, the finite element analysis of the extrusion of hot metals from a round billet to a hexagon workpiece was carried out. A comparison of the extrusion forces and the grain sizes for the formed parts was made for the linearly and non-linearly converging dies. It was found that the non-linearly converging dies could reduce the deformation resistance remarkably, and produce more uniform grains than those using the linearly converging dies.

This data was imported from Scopus:

Authors: You, L.H., Hu, J.H., Shi, Y.H. and Zhang, J.J.

Journal: Journal of Materials Processing Technology

Volume: 150

Issue: 1-2

Pages: 62-69

ISSN: 0924-0136

DOI: 10.1016/j.jmatprotec.2004.01.021

In this paper, a new mathematical representation of single-patch surfaces is reported. With this representation, complex tool shapes of metal forming can be described with a single surface patch which is prescribed by the boundary of the die at its entry and exit. For non-linearly converging die-surfaces, the die shapes can be effectively altered by changing the coefficients of the tangential boundary conditions. Using the obtained die-surfaces, the finite element analysis of the extrusion of hot metals from a round billet to a hexagon workpiece was carried out. A comparison of the extrusion forces and the grain sizes for the formed parts was made for the linearly and non-linearly converging dies. It was found that the non-linearly converging dies could reduce the deformation resistance remarkably, and produce more uniform grains than those using the linearly converging dies. © 2004 Elsevier B.V. All rights reserved.

This data was imported from Web of Science (Lite):

Authors: You, L.H., Hu, J.H., Shi, Y.H. and Zhang, J.J.

Journal: JOURNAL OF MATERIALS PROCESSING TECHNOLOGY

Volume: 150

Issue: 1-2

Pages: 62-69

ISSN: 0924-0136

DOI: 10.1016/j.jmatprotec.2004.01.021

The data on this page was last updated at 05:12 on February 26, 2020.