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Calculation of the forming limit diagram
Metallurgical Transactions A, 1989A mathematical model is presented to help understand sheet metal deformation during forming. The particular purpose of this model is to predict the forming limit diagram (FLD). The present model is an extension of a previous analysis by Jones and Gillis (JG)[1] in which the deformation is idealized into three phases: (I) homogeneous deformation up to ...
Wonjib Choi +2 more
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Forming limit diagrams: a micromechanical approach
International Journal of Mechanical Sciences, 2000zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gänser, Hans Peter +2 more
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Stochastic simulations of forming limit diagrams
AIP Conference Proceedings, 2007Finite element simulations of square patches of material with spatial thickness variations subjected to a set of proportional strain paths have been performed. Localization is detected when the thickness increment in one element is much larger then the average thickness increment of the whole patch.
O. Fyllingen +2 more
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Forming limit diagram of perforated sheet
Scripta Metallurgica et Materialia, 1995The proper design and manufacture of tube sheets in heat exchangers and shadow masks in color picture tubes require the characterization of the deformation behavior of perforated sheets containing a large number of holes. The limit or failure strains in sheet metal forming are best represented by a forming limit curve (FLC) which indicates the onset of
Seung Chul Baik +2 more
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Forming‐limit diagram numerical predictions: yield criteria studies
Communications in Numerical Methods in Engineering, 2002AbstractIn this work, it is shown the numerical formulation for prediction of the right‐hand side of forming limit diagram (FLD). Five different yield criterias were used: Von Mises', Hill's (1948), Hill's (1979), Logan and Hosford's and Hill's (1993).
Ávila, Antonio F. +1 more
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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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Torsional Softening and the Forming Limit Diagram
SAE Technical Paper Series, 1996<div class="htmlview paragraph">Torsional softening arising from the deformation-induced anisotropy of texture and dislocation substructure formation affects various regions of the forming limit diagram. The third invariant of overstress, <img class="article-image inline" src="960599_fig0001.jpg" alt=""/> is included in the kinematic and ...
Mark F. Horstemeyer +2 more
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The bending dependency of forming limit diagrams
International Journal of Material Forming, 2018The forming limit diagram (FLD) is commonly used in the forming industry to predict localized necking in sheet metals. However, experimental and mathematical determination of forming limit curves is based on in-plane deformation without taking a bending component into account.
Felix M. Neuhauser +4 more
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Generalised forming limit diagrams showing increased forming limits with non-planar stress states
International Journal of Plasticity, 2009zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Allwood, Julian M., Shouler, Daniel R.
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Forming limit diagram of DP600 steel sheets during electrohydraulic forming
The International Journal of Advanced Manufacturing Technology, 2019Electrohydraulic forming is a typical high-speed forming which can significantly improve the formability of sheet metal. The objectives of this paper are to explore the influence of preset wire length and lifting height on the equi-biaxial stretching forming limit of DP600 steel sheets during electrohydraulic forming.
Haiping Yu, Qiuli Zheng
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