Please use this identifier to cite or link to this item:
Title: Friction effects during open-die micro-forging/extrusion processes : an upper bound approach
Authors: Ghassemali, Ehsan
Tan, Ming-Jen
Wah, Chua Beng
Lim, Samuel C.V.
Jarfors, Anders E.W.
Keywords: DRNTU::Engineering::Aeronautical engineering::Materials of construction
Issue Date: 2014
Source: Ghassemali, E., Tan, M.-J., Wah, C. B., Lim, S. C. V., & Jarfors, A. E. W. (2014). Friction effects during open-die micro-forging/extrusion processes : an upper bound approach. Procedia engineering, 81, 1915-1920.
Series/Report no.: Procedia Engineering
Abstract: In microforming processes it is preferred to not to use lubricants, due to their complex behavior in micro-scale. Nevertheless, using lubricants could increase the life time and decrease the required forming load. Thus, it is necessary to study and develop an analytical solution for different lubrication conditions in microforming processes. A previously studied upper bound model was modified in this study for various lubrication conditions in an open-die micro-forging/extrusion process. Two approaches were chosen for identifying the friction factor in the model: (i) global friction factor, (ii) localized friction factor. Comparison of the modeling results with the experimental showed the reliability of the second approach, providing a better fit.
DOI: 10.1016/j.proeng.2014.10.256
Rights: © 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Conference Papers
SIMTech Conference Papers

Files in This Item:
File Description SizeFormat 
Friction Effects During Open-die Micro-forgingExtrusion Processes An Upper Bound Approach.pdf427.72 kBAdobe PDFThumbnail

Citations 20

Updated on Jul 24, 2020

Citations 20

Updated on Mar 4, 2021

Page view(s) 20

Updated on Apr 18, 2021

Download(s) 20

Updated on Apr 18, 2021

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.