Sheet metal forming

An experimental study of material flow and surface quality using image processing in the hydraulic bulge test

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An experimental study of material flow and surface quality using image processing in the hydraulic bulge test Sławomir Świłło Faculty of Production Engineering, Warsaw University of Technology, Warsaw/Poland. DOI: https://doi.org/10.7494/cmms.2013.2.0443 Abstract: The paper presents a method for the surface shape and strain measurement applied in the determination of metal flow and product quality. Accurate determination … Read more

Prediction of forming limit in stretch flanging by finite element simulation combined with ductile fracture criterion

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Prediction of forming limit in stretch flanging by finite element simulation combined with ductile fracture criterion Hirohiko Takuda1, Takayuki Hama1, Kazuki Nishida1, Tohru Yoshida2, Jun Nitta2 1Department of Energy Science and Technology, Kyoto University, 606-8501 Kyoto, Japan. 2Steel Research Laboratories, Nippon Steel Corporation, 293-8511 Futtsu, Japan. DOI: https://doi.org/10.7494/cmms.2009.1.0219 Abstract: In our previous studies, the limit … Read more

Finite element analysis of nodal release approach to model ductile fracture in metal sheets

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Finite element analysis of nodal release approach to model ductile fracture in metal sheets Bernd-Arno Behrens, Kanwar Bir Sidhu Institute of Metal Forming and Metal Forming Machines,An der Universität 2, 30823 Garbsen, Germany. DOI: https://doi.org/10.7494/cmms.2007.2.0157 Abstract: The FE-simulation of ductile fracture processes for discrete crack propagation using nodal release approach is well established for modelling … Read more

Determination of drawbead contacts with variable bead penetration

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Determination of drawbead contacts with variable bead penetration N. K. B. Manjula, P. Nanayakkara, Peter D. Hodgson Centre for Material and Fibre Innovation Deakin University, Geelong, Victoria, Australia, 3217. DOI: https://doi.org/10.7494/cmms.2006.3.0171 Abstract: In stamping operations, the sliding of the sheet metal over the drawbeads is of great importance. The geometry of the drawbead and the … Read more

Forming limits of austenitic stainless steel sheets

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Forming limits of austenitic stainless steel sheets A.S. Korhonen, T. Manninen, K. Kanervo Helsinki University of Technology, P.O. Box 6200, 02015 HUT, Finland. DOI: https://doi.org/10.7494/cmms.2006.3.0170 Abstract: The forming limits of austenitic stainless steel sheets were studied. It was found that the observed limit of straining in stretch forming, when both of the principal stresses are … Read more