Results 211 to 220 of about 110,269 (254)
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Forming Limit Curves and Forming Limit Stress Curves for Advanced High Strength Steels
Materials Science Forum, 2013Experimental and numerical investigations using Forming Limit Curve (FLC) and Forming Limit Stress Curve (FLSC) were carried out for two Advanced High Strength Steel (AHSS) grades DP780 and TRIP780. The forming limit curves were experimentally determined by means of Nakazima stretching test.
Sansot Panich +4 more
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Experimental and numerical investigations on forming limit curves in micro forming
Advances in Materials and Processing Technologies, 2020The Forming limit diagram is an important tool in metal forming processes, as it indicates the failure limits for ductile damage and onsite necking.
Gyan Patel +2 more
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Variability of forming limit curves
International Journal of Mechanical Sciences, 1974Summary The forming limit curve indicates the maximum uniform strain which can be achieved in an element of a sheet which is strained in a proportional biaxial straining process; it refers to the strain in a region adjacent to, but not within, any area of localized straining associated with rupture.
H. van Minh, R. Sowerby, J.L. Duncan
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The forming limit curve for bending processes
International Journal of Mechanical Sciences, 1979Abstract The maximum strain that metal can suffer in some bulk forming processes is limited by the phenomenon of shear band formation, which precedes ductile fracture. The process of strain localization in the shear band has been analysed theoretically on the basis of the theory of plastic flow.
Marciniak, Zdzislaw +1 more
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Forming Limit Curves in Single Point Incremental Forming
CIRP Annals, 2007New experimental data is presented on Forming Limits in Single Point Incremental Forming (SPIF), which is a sheet metal forming process which does not require dies. A Box-Behnken Design of Experiment is used to develop the experimental plan and analyze data. In former work, the most critical factors affecting Single Point Incremental Forming were found
M. Ham, J. Jeswiet
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Determining a probabilistic forming limit curve
AIP Conference Proceedings, 2013Forming Limit Curves are surrounded by uncertainty - in particular the uncertainty surrounding the calculation of limit strains from experimental data. The position dependent method outlined in ISO12004-2 is known to make assumptions regarding the behavior of sheet metal at the onset of necking.
N. Small +6 more
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Determination of the Forming Limit Stress Curve for Anisotropic Sheets
CIRP Annals - Manufacturing Technology, 1987Abstract The aim of this study is to propose s calculation method based on Hill's yield criterium to determine the forming limit stress states for anisotropic sheets. First we determine experimentally the forming limit diagrams of a titanium sheet for various strain path shapes. From these diagrams, we calculate then the limit stress states.
R Arrieux
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Limiting Functional Forms for Market Demand Curves
Econometrica, 1972On the basic assumption that individual consumption of a good is a stochastic phenomenon, the first part of this article shows that under general conditions market quantity demanded is asymptotically (as n, the number of individuals in the market, increases) distributed as normal with mean and variance a function of own price given all other prices and
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Calculation of the forming limit curve at fracture
Journal of Materials Science, 1983The prediction of the forming limit diagram at fracture (FLDF) is of great importance, specially in cases where forming is controlled by fracture instead of necking. A physical model of coalescence is proposed in two cases of internal damage: (i) damage by decohesion of the particle matrix interface, and (ii) damage by failure of the particle.
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Forming Limit Curves for Complex Strain Paths
Archives of Metallurgy and Materials, 2013This paper presents results of experimental studies of forming limit curves (FLC) for sheet forming under complex strain paths. The Nakazima-type formability tests have been performed for the as-received steel blank and for the blank pre-strained by13%.
J. Rojek +5 more
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