Results 211 to 220 of about 71,352 (265)

Stochastic simulations of forming limit diagrams

AIP Conference Proceedings, 2007
Finite 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, O. S. Hopperstad, M. Langseth   +2 more
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The bending dependency of forming limit diagrams

International Journal of Material Forming, 2018
The 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, Oscar Terrazas, Niko Manopulo, Pavel Hora, Chester Van Tyne   +4 more
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Forming limit diagrams: a micromechanical approach

International Journal of Mechanical Sciences, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gänser, Hans Peter, Werner, Ewald A., Fischer, Franz Dieter   +2 more
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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, David L. McDowell, Douglas J. Bammann   +2 more
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On forming limit stress diagram analysis

International Journal of Solids and Structures, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wu, P. D., Graf, A., MacEwen, S. R., Lloyd, D. J., Jain, M., Neale, K. W.   +5 more
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Non-Traditional Forming Limit Diagrams for Incremental Forming

Advanced Materials Research, 2005
Although 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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Experimental and Theoretical Investigation of Forming Limit Diagram (FLD) and Forming Limit Stress Diagram (FLSD) For Aluminum Alloy 3105

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, S. J. Hoseinipour, H. D. Azodi, Sh. Yousefzadeh, Francisco Chinesta, Yvan Chastel, Mohamed El Mansori   +6 more
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Determination of warm forming limit diagram for ZEK100

AIP Conference Proceedings, 2013
The 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, Michael Worswick, Tim Skszek   +2 more
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A theoretical study on forming limit diagrams prediction

Journal of Materials Processing Technology, 2003
Abstract The paper develops a theoretical study on forming limit diagrams using a new general code for forming limit strains prediction. Treating the Marciniak and Kuckzinsky (M–K) theory by a new approach, the code consists of the main part and several subroutines, which allow the implementation of any hardening law, yield function or constitutive ...
M.C. Butuc, J.J. Gracio, A. Barata da Rocha   +2 more
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Analysis of forming limit diagram for superplastic materials

The International Journal of Advanced Manufacturing Technology, 2005
Superplastic 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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