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Forming Limit Curves for the AA5083 Alloy under Quick Plastic Forming Conditions
SAE Technical Paper Series, 2011<div class="section abstract"><div class="htmlview paragraph">Forming Limit Curves (FLCs) were developed for the 5083 aluminum alloy at conditions simulating high temperature processes such as superplastic and quick plastic forming. Sheet samples were formed at 450 °C and at a constant strain rate of 5x10<sup>-3</sup> s<sup ...
Fadi Abu-Farha +2 more
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Determination of the Forming Limit Stress Curve for Anisotropic Sheets
CIRP Annals, 1987Abstract The aim of this study is to propose s calculation method based on Hill's yield criterium to determine the forming limit stress states for anisotropic sheets. First we determine experimentally the forming limit diagrams of a titanium sheet for various strain path shapes. From these diagrams, we calculate then the limit stress states.
R. Arrieux, M. Boivin, F. Le Maître
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Formability Limiting Curve of Mild Steel by Explosive Forming
1990At the advent of increasing interest in high velocity forming techniques, the knowledge of maximum extent of formation without the risk of any failure becomes necessary. A Formability Limit Curve will represent a critical level curve separating FAIL region from SAFE region.
K. Raghukandan +2 more
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Modelling of Metal Formability in Forming Processes (Forming Limit Curves-FLC)
2003The basic purpose of formability modelling is the defining of mathematical models that are indispensable for simulation and determination of the formability limit of metals, that is, the limiting degree of deformation in forming processes. The results obtained indicate that the formability limit of metals is a great extent dependent on the state of ...
Jurković, Milan, Jurković, Zoran
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Pre-strain correction of forming limit curves
Materials Research ProceedingsAbstract. Inherent features of the Nakajima test to determine forming limit curves (FLC) are inevitable bending strains and pre-strains originating from evolving punch contact in the early stage. Both effects are very annoying and bias the resulting FLC considerably, so that a direct comparison of materials with different gauges is impossible.
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Advanced Models for the Prediction of Forming Limit Curves
2016During the forming of flat sheet metal into a more complex shape, a number of plastic instabilities may occur subsequently. A ‘plastic instability’ occurs when the zone of plastic deformation is suddenly confined to a smaller zone. The first plastic instability which usually occurs in forming processes is the onset of diffuse necking, in which plastic ...
Dorel Banabic +4 more
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Development of Forming Limit Curves for Aerospace Aluminum Alloys
1978The objective was to develop forming limit curve (FLCs),tensile(elastic and plastic) properties, and production stretch-form test data for two alloys. A laboratory technique developed by Hecker and his associates at General Motors Research Laboratories was used to develop FLCs for 2024-T3 and 2219-T31 aluminum alloys.
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