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Friction effects during open-die micro-forging/extrusion processes: An upper bound approach
Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning. School of Mechanical & Aerospace Engineering, Nanyang Technological University and Singapore Institute of Manufacturing Technology (SIMTech).ORCID-id: 0000-0002-7527-719X
School of Mechanical & Aerospace Engineering, Nanyang Technological University.
Singapore Institute of Manufacturing Technology (SIMTech).
Materials Engineering, Monash University.
Vise andre og tillknytning
2014 (engelsk)Inngår i: Procedia Engineering / [ed] Ishikawa, T, Mori, KI, Elsevier, 2014, Vol. 81, s. 1915-1920Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

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.

sted, utgiver, år, opplag, sider
Elsevier, 2014. Vol. 81, s. 1915-1920
Serie
Procedia Engineering, ISSN 1877-7058 ; 81
Emneord [en]
Microforming, Friction, Microstructure, Size effect
HSV kategori
Identifikatorer
URN: urn:nbn:se:hj:diva-32122DOI: 10.1016/j.proeng.2014.10.256ISI: 000358994000311Scopus ID: 2-s2.0-84949157318OAI: oai:DiVA.org:hj-32122DiVA, id: diva2:1040628
Konferanse
11th International Conference on Technology of Plasticity, ICTP 2014, Nagoya, 19-24 October 2014.
Tilgjengelig fra: 2016-10-28 Laget: 2016-10-28 Sist oppdatert: 2018-06-11bibliografisk kontrollert

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Ghassemali, EhsanJarfors, Anders E.W.

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