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Hole-flanging by incremental sheet forming
G. Centeno1; M.B. Silva2; V.A.M. Cristino2; C. Vallellano1; P.A.F. Martins2
2012-08-01
Source PublicationInternational Journal of Machine Tools and Manufacture
ISSN0890-6955
Volume59Pages:46-54
Abstract

Incremental forming of hole-flanges in sheet metal parts is an emerging process with a high potential economic payoff for rapid prototyping and for small quantity production. However, as with all new sheet metal forming processes, there is need for examining its deformation mechanics and describing the physics behind the occurrence of failure. How metal fails, how pre-cut holes influence strain and stress in single point incremental forming, and how these subjects can be brought together in order to understand the overall formability of hole-flanging by multi-stage incremental forming are still not well understood. However, they are of great importance for improving the performance and industrial applicability of the process. This paper attempts to provide a new level of understanding for the process by combining circle grid analysis and independent characterization of the mechanical properties and formability limits of the material with the fabrication of conical and cylindrical hole-flanges. Experimental observations, measured strain paths and material formability limits by necking and fracture allow concluding that hole-flanging by incremental forming gives rise to a new mode of deformation, not found in conventional incremental forming of sheet metal blanks without pre-cut holes, and to failure by fracture without previous localized necking. © 2012 Elsevier Ltd. All rights reserved.

KeywordCircle Grid Analysis Formability Hole-flanging Incremental Sheet Forming
DOIhttps://doi.org/10.1016/j.ijmachtools.2012.03.007
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Manufacturing ; Engineering, Mechanical
WOS IDWOS:000305726500006
PublisherELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
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被引频次[WOS]:46   [WOS记录]     [WOS相关记录]
Document TypeJournal article
专题University of Macau
Affiliation1.Department of Mechanical and Materials Engineering, University of Seville, Camino de los Descubrimientos s/n, 41092 Seville, Spain
2.IDMEC, Instituto Superior Te´cnico, Technical University of Lisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
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G. Centeno,M.B. Silva,V.A.M. Cristino,et al. Hole-flanging by incremental sheet forming[J]. International Journal of Machine Tools and Manufacture,2012,59:46-54.
APA G. Centeno,M.B. Silva,V.A.M. Cristino,C. Vallellano,&P.A.F. Martins.(2012).Hole-flanging by incremental sheet forming.International Journal of Machine Tools and Manufacture,59,46-54.
MLA G. Centeno,et al."Hole-flanging by incremental sheet forming".International Journal of Machine Tools and Manufacture 59(2012):46-54.
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