Results 221 to 230 of about 71,352 (265)
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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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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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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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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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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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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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Prediction of Forming Limit Diagram with Damage Analysis
SAE Technical Paper Series, 1996<div class="htmlview paragraph">Based on the theory of damage mechanics, an orthotropic damage model for the prediction of forming limit diagram (FLD) is developed. The conventional method of FLD used to predict localized necking adopts two fundamentally different approaches.
C. L. Chow, L. G. Yu, M. Y. Demeri
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Analyses of the Forming Limit Diagram in Digital Environment
Advanced Materials Research, 2005The determination of the forming limit diagrams (FLDs) for sheet metal can be influenced by testing parameters and a chosen testing procedure. Many different tests have been applied and recent work has resulted in some guidelines to decrease the influence of the testing method and the expertise of an individual laboratory.
Tomaz Pepelnjak, Ales Petek, Karl Kuzman
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A Proposed Generalized Model for Forming Limit Diagram
Volume 6A: Materials and Fabrication, 2015One of the most significant approaches for predicting formability is the use of forming limit diagrams (FLDs). The development of the generalized model integrates other models. The first model is based on Von-Misses yield criterion (traditionally used for isotropic material) and power law constitutive equation considering the strain hardening exponent.
Aly El Domiaty +2 more
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Determination of Forming Limit Diagrams for Titanium Sheets
CIRP Annals, 1981According to their peculiar properties, the applications of Titanium and its alloys are widely developped; so, the evaluation of their drawability is of a great interest. We have performed our tests with an experimental device of NAKAZIMA's type and we have set up a suitable interoolation method, to evaluate strains at the onset of necking.
R. Arrieux, C. Bedrin, F. Le Maître
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