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Theoretical Determination of Forming Limit Diagram for Steel ,Brass and Aluminum alloy sheets

Anas O. Edrees, Waleed J. Ali
2007 Al-Rafidain Engineering Journal  
show the experimental Forming limit curves of Aluminum alloy , Mild Steel and α-Brass as received , it is clear from the FLC for Brass is the highest while that for Aluminum alloy is the lowest , this  ...  In the experimental study, mild Steel, brass and aluminum alloy sheets their chemical composition are shown in were used .  ...  the best results for aluminum alloy and mild steel.  ... 
doi:10.33899/rengj.2007.44929 fatcat:nt4sbx35rne25mmfwzksj43ag4

Modeling of Cross Work Hardening and Apparent Normality Loss after Biaxial–Shear Loading Path Change

Yanfeng Yang, Cyrille Baudouin, Tudor Balan
2022 Symmetry  
The specific loading-path change during sheet metal forming may lead to some abnormal deformation phenomena.  ...  Detailed contributions of the model's ingredients and features are clarified. The developed material model is intended for sheet metal forming simulation applications.  ...  Elasto-visco-plastic modeling of mild steels for sheet forming applications over a large range of strain rates. Int. J. Solids Struct. 2013, 50, 2691-2700. [CrossRef]  ... 
doi:10.3390/sym14010142 fatcat:56iovzq27vbz7o42xnvcx4ihfy

Ductility limit prediction using a GTN damage model coupled with localization bifurcation analysis

Lotfi Zoher Mansouri, Hocine Chalal, Farid Abed-Meraim
2014 Mechanics of materials (Print)  
The effect of the dense matrix hardening parameters on the strain localization predictions of the voided aggregate, although found much smaller in the whole, is more noticeable for the plane strain tension  ...  The resulting loss of ellipticity condition is then used to determine ellipticiy loss diagrams (ELDs) associated with strain paths that are those typically applied to metals under biaxial stretching.  ...  Effect of the 'acceleration' factor ( GTN δ ) on the prediction of strain localization for the XES steel (left) and Al5182 aluminum alloy (right) under uniaxial tension (top) and balanced biaxial tension  ... 
doi:10.1016/j.mechmat.2014.06.005 fatcat:yoq3rg7zbbgwlnyn6miliuri54

Strain rate and thermal softening effects in shear testing of AA7075-T6 sheet

Taamjeed Rahmaan, Ping Zhou, Cliff Butcher, Michael J. Worswick, E. Buzaud, A. Cosculluela, H. Couque, E. Cadoni
2018 EPJ Web of Conferences  
At lower strains, the AA7075-T6 alloy showed mild positive rate sensitivity.  ...  Shear tests were performed at strain rates ranging from quasi-static (0.01 s -1 ) to 500 s -1 for AA7075-T6 sheet metal alloy at room temperature.  ...  Council of Canada, the Canada Research Chairs Secretariat, and the Ontario Research Fund.  ... 
doi:10.1051/epjconf/201818302037 fatcat:da6uffvszfckdeutpjzgmzgaue

Experimental Characterization and Deterministic Prediction of In-Plane Formability of 3rd Generation Advanced High Strength Steels

Jon Edward Gutierrez, Jacqueline Noder, Clifford Butcher
2020 Metals  
The process-corrected limit strains in the Nakazima and Marciniak tests were compared to various analytical Forming Limit Curve (FLC) models for in-plane stretching.  ...  The developed framework for FLC prediction was then applied to a DP980 AHSS and an AA5182 aluminum alloy from the literature.  ...  Conclusions From the current study of three variants of AHSS and a disparate aluminum alloy, an objective and deterministic approach to analytically predict forming limit strains has been developed.  ... 
doi:10.3390/met10070902 fatcat:ul2yrh6nbjhnvk4oji25fkzrju

Forming limits for electromagnetically expanded aluminum alloy tubes: Theory and experiment

J.D. Thomas, M. Seth, G.S. Daehn, J.R. Bradley, N. Triantafyllidis
2007 Acta Materialia  
Motivated by the quasistatic case, recent work has extended the concept of forming limit diagrams (FLDs) to model the ductility of electromagnetically formed sheets.  ...  The experimental results are plotted in principal strain space and show reasonable agreement with the corresponding theoretical FLD predictions, which indicate a 2-to 3-fold increase in the forming limits  ...  of the EMF formed AA6061-T4, thus making aluminum alloys possibly more ductile than conventional mild steel.  ... 
doi:10.1016/j.actamat.2006.12.025 fatcat:vsycaskeebdtpbnmz7cm5ptixy

Continuous, large strain, tension/compression testing of sheet material

R.K. Boger, R.H. Wagoner, F. Barlat, M.G. Lee, K. Chung
2005 International journal of plasticity  
Modeling sheet metal forming operations requires understanding of the plastic behavior of sheet alloys along non-proportional strain paths.  ...  commercial sheet alloys.  ...  Acknowledgments Special thanks to the Alcoa Technical Center, Alcoa Center, PA, for providing the aluminum alloys used in this work to the Ohio Supercomputer Center under contract PAS 080, and to the National  ... 
doi:10.1016/j.ijplas.2004.12.002 fatcat:sopqytnf4jf2tgyu3rgwstajti

Plastic deformation in brittle and ductile fracture

D.C. Drucker, J.R. Rice
1970 Engineering Fracture Mechanics  
Similarities and differences of behavior between steels which are highly rate-sensitive and aluminum alloys or other rather insensitive materials are examined.  ...  Crack extension under plane strain conditions is studied in some detail, and the important role of progressive blunting is indicated both in limiting maximum achievable stresses and providing a small region  ...  plastic zone extents R = 0.002 (m are tabulated on this basis for several materials: a very mild steel a /E = 0.001, a high strength steel or strong aluminum alloy 0 C /E = 0.007+ , and the intermediate  ... 
doi:10.1016/0013-7944(70)90001-9 fatcat:whdpc5gc2rhb7nnbue2rnmxml4

On the application of the forming limit diagrams for quality control of blanks for wheelbarrow of ASTM A1008 carbon steel

Celso Cruz-González, Benjamín Vargas-Arista, Iván León-Méndez, Isidro Guzmán-Flores
2022 Revista de Metalurgia  
The effectivity of the forming limit diagrams in manufacturing wheelbarrow by deep-drawing is shown because of the high material scrap rate which reduces productivity.  ...  strain distribution, the highest forming limit strain (28%) and the highest uniform elongation zone, favoring that failure sites did not occur.  ...  ACKNOWLEDGMENTS The authors wish to thank the laboratory equipment, experimental and financial supports received from CONACyT and CIDESI (Research Center of CONACyT).  ... 
doi:10.3989/revmetalm.218 fatcat:jqtcvvh2ebh2xceemuupxktxee

Experimental and numerical study on effect of forming rate on AA5086 sheet formability

Cunsheng Zhang, Lionel Leotoing, Dominique Guines, Eric Ragneau
2010 Materials Science & Engineering: A  
The influences of initial testing temperature and forming rate on the sheet formability are analyzed.  ...  The aim of this paper is to experimentally and numerically investigate the influence of forming rate and temperature on formability of an AA5086 sheet.  ...  use of aluminum alloys that exhibit low formability compared with typical mild steels [13, 7] .  ... 
doi:10.1016/j.msea.2009.09.013 fatcat:pu6lb3dubfgpdlceq2ufei5kcq

Improvement of Numerical Modelling Considering Plane Strain Material Characterization with an Elliptic Hydraulic Bulge Test

Matthias Lenzen, Marion Merklein
2018 Journal of Manufacturing and Materials Processing  
Moreover, the improvement of the material model is investigated exemplarily for the three sheet metal alloys DC06, DP600 and AA5182.  ...  A precise characterization of material behavior is necessary to identify yield criteria or hardening laws for an accurate numerical design of sheet metal forming processes.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/jmmp2010006 fatcat:xzxz6jcfmvfvxmshpgv7ej5dsm

The Influence of Stress on Corrosion (Part II of Two Parts)

1950 Corrosion  
Of direct importance are studies on the effects of strain on electrochemical potentials and rates of corrosion.  ...  Studies of the nature of grain boundaries, slip planes, twin bands and other possible localized paths of corrosion, and research on the effects of strain on diffusion rates, transformation and precipi-  ... 
doi:10.5006/0010-9312-6.9.290 fatcat:lgbddzpwe5gajbrzs6otuei7ja

A Method for Direct Measurement of Multiaxial Stress-Strain Curves in Sheet Metal

T. Foecke, M.A. Iadicola, A. Lin, S.W. Banovic
2007 Metallurgical and Materials Transactions. A  
A method has been developed that allows measurement of stress-strain curves for sheet metal being deformed in multiaxial tension.  ...  This system is flexible enough to allow spatial mapping of in-plane stress and measurement of stresses at specific locations of interest on the sample, such as developing localizations.  ...  The method involved no modification of the sheet beyond trimming to size and shape well outside of the gage section and can be used on iron-, aluminum-, and copper-based alloys.  ... 
doi:10.1007/s11661-006-9044-y fatcat:25ngyj4tgffarfpejcdiyswoai

Plastic Bending at Large Strain: A Review

Sergei Alexandrov, Elena Lyamina, Yeong-Maw Hwang
2021 Processes  
Finite plastic bending attracts researchers' attention due to its importance for identifying material properties and frequent occurrence in sheet metal forming processes.  ...  The present review contains theoretical and experimental parts. The theoretical part is restricted to analytic and semi-analytic solutions for pure bending and bending under tension.  ...  Mild steel and two aluminum alloys were used in the experiment. Springback and its accurate theoretical prediction are crucial issues for processes that involve bending [74] .  ... 
doi:10.3390/pr9030406 fatcat:lw2rrtqdlveojnavbx6dvyzctu

Crystal-plasticity finite-element analysis of inelastic behavior during unloading in a magnesium alloy sheet

Takayuki Hama, Hirohiko Takuda
2011 International journal of plasticity  
Figure 1 shows the stress-strain curves obtained from uniaxial tensile tests of Mg alloy, mild steel, and aluminum sheets.  ...  Logarithmic strain Fig. 1 Inelastic behavior during unloading in Mg alloy, mild steel, and aluminum sheets. loading-unloading test of an extruded AZ31 Mg alloy and showed that its inelastic response  ... 
doi:10.1016/j.ijplas.2010.11.004 fatcat:isoun4ihxngujeyef5acmetroq
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