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Non-Traditional Forming Limit Diagrams for Incremental Forming
Advanced Materials Research, 2005Although not standard, Forming Limit Diagrams, FLD’s, are used throughout the automotive industry as a preliminary tool to determine if a sheet metal forming process is capable of forming a good part. FLD’s show a limited range of strains on the diagram; typically the range is 0 to 1 on the major strain axis.
J. Jeswiet, David J. Young, M. Ham
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AIP Conference Proceedings, 2011
In this paper experimental and theoretical FLD and FLSD of AA3105 are investigated. For this purpose, the forming limit diagram of Aluminum alloy 3105 using out‐of‐plane test is evaluated experimentally. Also, base of emphasis of forming limit stress diagrams and using plasticity equations, the stress limits resulted from strain limits and then forming
Mehdi. Safari +6 more
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In this paper experimental and theoretical FLD and FLSD of AA3105 are investigated. For this purpose, the forming limit diagram of Aluminum alloy 3105 using out‐of‐plane test is evaluated experimentally. Also, base of emphasis of forming limit stress diagrams and using plasticity equations, the stress limits resulted from strain limits and then forming
Mehdi. Safari +6 more
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Analysis of forming limit diagram for superplastic materials
The International Journal of Advanced Manufacturing Technology, 2005Superplastic materials show very large tensile elongation (in excess of 5000%) even if they are lowly stressed. Superplastic forming is carried out at high temperatures and relatively low strain rates. In order to control the industrial forming processes, the difficulty in predicting the failure strain of superplastic materials is main problem faced by
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Prediction of the forming limit diagrams in pulsatory straining
Journal of Materials Processing Technology, 1994The influence of the pulsatory straining upon the formability of the steel sheets is investigated both theoretical and experimental. The left-hand side of the FLDs was calculated using a Hutchinson-Neale (H-N) analysis. Effects of changing the strain-hardening coefficient, n, strain-rate coefficient, m, anisotropy coefficients, r0, r45 and r90 and ...
D. Banabic, I.R. Dörr
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Time dependent determination of forming limit diagrams
CIRP Annals, 2010Abstract The forming limit diagram (FLD) is a convenient tool for classification of sheet metals’ formability in the finite element analysis as well as in the press shop. The FLD indicates the maximum strain values which can be applied on a material without failure as a function of the strain condition.
M. Merklein, A. Kuppert, M. Geiger
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Determination of warm forming limit diagram for ZEK100
AIP Conference Proceedings, 2013The formability of a rare-earth alloyed magnesium sheet, ZEK100, is studied through determination of its Forming Limit Diagram (FLD). Limiting dome height experiments were performed at elevated temperatures with in situ digital image correlation (DIC) measurement of strain.
Nima Panahi +2 more
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Limitations of the M-K Based Forming Limit Diagrams
2012Using a rate dependent Taylor type crystal plasticity formulation, the limitations of Marciniak-Kuczynski (M-K) approach to numerically simulate the Forming Limit Diagrams (FLDs) were studied. Three uniaxial stress-strain curves with three different post-necking hardening behaviors were generated using crystal plasticity formulation.
Mohsen Mohammadi +2 more
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2004
In this work, the Marciniak and Kuczynski model (MK) will be reviewed and will be generalized to a more general approach for the calculation of forming limit diagrams. In the new model we will account for all directions of the imperfection. This new approach has been used to calculate the theoretical FLDs (forming limit diagrams) for Vonmises, Barlat ...
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In this work, the Marciniak and Kuczynski model (MK) will be reviewed and will be generalized to a more general approach for the calculation of forming limit diagrams. In the new model we will account for all directions of the imperfection. This new approach has been used to calculate the theoretical FLDs (forming limit diagrams) for Vonmises, Barlat ...
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Predicting of plastic instability and forming limit diagrams
International Journal of Mechanical Sciences, 2004zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Aghaie-Khafri, M., Mahmudi, R.
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On the prediction of the forming-limit diagram of sheet metals
International Journal of Mechanical Sciences, 1992Abstract Models for predicting the formability of sheet metals which take into account a single mode of strain localization have not yet led to accurate predictions. In the present work an attempt is made to include some important experimentally determined parameters in the model, i.e.
P.P. Date, K.A. Padmanabhan
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