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Optimization of axisymmetric open-die micro-forging/extrusion processes: An upper bound approach
School of Mechanical & Aerospace Engineering, Nanyang Technological University, Singapore.ORCID-id: 0000-0002-7527-719X
School of Mechanical & Aerospace Engineering, Nanyang Technological University, Singapore.
Högskolan i Jönköping, Tekniska Högskolan, JTH. Forskningsmiljö Material och tillverkning – Gjutning. Högskolan i Jönköping, Tekniska Högskolan, JTH, Material och tillverkning.ORCID-id: 0000-0002-0101-0062
Materials Engineering, Monash University, Wellington Road, Clayton, Victoria, Australia.
2013 (engelsk)Inngår i: International Journal of Mechanical Sciences, ISSN 0020-7403, E-ISSN 1879-2162, Vol. 71, s. 58-67Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

There is a trend towards component miniaturization and strong drive towards cost effective and sustainable metal forming techniques of miniaturized components. This paper presents an upper bound solution for the optimization of open-die forging/extrusion processes in the forming of micro-pins from a sheet metal. Using such an analytical modeling approach, the critical blank thickness, the resulting final part geometry, together with the required forming load were predicted based on the location of the neutral plane under the punch during the process. Based on the phenomenological findings of the process, the geometry size factor, x, was introduced explaining its relative importance to the model. Experimental results obtained from C11000 copper samples using a progressive microforming process was found to agree well with the results predicted by the model. The results were also validated with other results reported before from a similar process.

sted, utgiver, år, opplag, sider
2013. Vol. 71, s. 58-67
Emneord [en]
micro forming, modelling, upper bound analysis, copper
HSV kategori
Identifikatorer
URN: urn:nbn:se:hj:diva-21139DOI: 10.1016/j.ijmecsci.2013.03.010ISI: 000319547800006Scopus ID: 2-s2.0-84877582218Lokal ID: JTHMaterialISOAI: oai:DiVA.org:hj-21139DiVA, id: diva2:619891
Tilgjengelig fra: 2013-05-07 Laget: 2013-05-07 Sist oppdatert: 2017-12-06bibliografisk kontrollert

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