Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2012 Optimum segmented blank holder shape and its variable blank holder gaps (VBHGs) are determined by a sequential approximate optimization (SAO) with radial basis function network. In deep drawing, wrinkling and tearing of blank sheet are major defects. The
Jirasak SRIRAT +2 more
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Plastic instability in complex strain paths predicted by advanced constitutive equations [PDF]
The present paper aims at predicting plastic instabilities under complex loading histories using an advanced sheet metal forming limit model. The onset of localized necking is computed using the Marciniak-Kuczinslcy (MK) analysis [I] with a physically ...
Barlat, F +3 more
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Experimental investigations on forming limit diagram of ultra thin SS 304 steel : effect of circular grid size, sheet orientation, punch size and deformation speed [PDF]
, 2019 In the present work, SS 304 sheet of 200 μm thickness was used to experimentally evaluate the forming limit diagram (FLD). In this context, a sub-size limiting dome height (LDH) test setup was developed to deform rectangular specimens of different widths
Banker, K. H. +4 more
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Cyber equipping 4.0 – fe-simulation-based setting instructions for a rotary draw-bending machine [PDF]
, 2017 The tool setting process for rotary draw-bending is very complex. Only experienced machine operators know which settings lead to a good result in relation to the bending task.
Abele, Darwin +7 more
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MetalsHigh-strength steels such as Dual Phase (DP), Transformation-Induced Plasticity (TRIP), and Twinning-Induced Plasticity (TWIP) steels have gained importance in automotive applications due to the potential for weight reduction and increased performance in
Luis Fernando Folle +6 more
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Numerical Simulation and Die Design for Forming Process of Aluminum Alloy Door Inner Panel
Journal of Harbin University of Science and Technology, 2018 In the drawing process in order to reduce automobile wrinkling and rupture defect，In view of the material for the AA6009 aluminum alloy door inner plate，using the finite element software DYNAFOＲM to carry on the drawing forming numerical simulation and ...
LIU Xiao-jing +4 more
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Review on the influence of process parameters in incremental sheet forming [PDF]
, 2016 Incremental sheet forming (ISF) is a relatively new flexible forming process. ISF has excellent adaptability to conventional milling machines and requires minimum use of complex tooling, dies and forming press, which makes the process cost-effective and ...
A Attanasio +79 more
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Dramatically enhanced stamping formability of Mg–3Al–1Zn alloy by weakening (0001) basal texture
Journal of Materials Research and Technology, 2020 The stamping formability of Mg–3Al–1Zn (AZ31) alloy was greatly enhanced through weakening (0001) basal texture by repeated unidirectional bending (RUB).
Hua Zhang +11 more
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Comparison of the Forming - Limit Diagram (FLD) Models for Drawing Quality (DQ) Steel Sheets
Metalurgija, 2005 U ovom radu je provedeno usporedno ispitivanje tri matematička modela (model Marciniak - Kuczynskog, Hill-Swiftov i Sing-Rao) kao i empirijskih modela kojeg je predložila Sjeverno američka grupa za istraživanje dubokog izvlačenja (NADDRG). Granični kriterij (1993.) koji je nedavno predložio Hill koristi se za izračun graničnih deformacija u vezi s ...
Slota, J., Spišák, E.
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Homotopically trivializing the circle in the framed little disks
, 2013 This paper confirms the following suggestion of Kontsevich. In the appropriate derived sense, an action of the framed little disks operad and a trivialization of the circle action is the same information as an action of the Deligne-Mumford-Knudsen operad.
Drummond-Cole, Gabriel C.
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