Results 271 to 280 of about 484,909 (306)

Formability of automotive steels using forming limit diagrams

Materials Testing, 2016
Abstract Using forming limit diagrams is the most convenient method for determining the forming limits of steel sheets. In this work, they were investigated primarily. Six diagrams were prepared for five different steel grades having different properties and then the effects of sheet thickness, r values, chemical and mechanical ...
Bakkaloğlu, Adem, Özcan, Elvin
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A Proposed Generalized Model for Forming Limit Diagram

Volume 6A: Materials and Fabrication, 2015
One 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, Abdel-Hamid I. Mourad, Abdel-Hakim Bouzid   +2 more
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New forming limit diagram of laser tailored blank

The Journal of Strain Analysis for Engineering Design, 2001
The new forming limit diagram (FLD) of a laser tailored blank, which includes independent forming limit curves (FLCs) of a welded zone and constituent base metals, is introduced. To obtain the forming limits of a welded zone, hemispherical dome tests are performed with various widths of symmetric and asymmetric specimens. Together with the know-how to
B. Y Ghoo, S. W Park, Y. T Keum
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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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Determination of Forming Limit Diagrams for Titanium Sheets

CIRP Annals, 1981
According 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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Research on the Forming Limit Diagram Based on Laser Shock Forming

Applied Mechanics and Materials, 2010
Laser shock forming (LSF) of sheet metal is a novel technology in plastic deformation. It is necessary to correctly predict the Forming Limit Diagram (FLD) based on LSF. New failure maximum thickness reduction rate criterion is used to determine the forming limit based on the numerical system during LSF. The relationship model between maximum thickness
Yin Fang Jiang, Zhen Zhou Tang, Zhi Fei Li, Lei Fang   +3 more
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Forming limit diagrams for single-point incremental forming of aluminium sheet

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 2005
The single-point incremental forming (SPIF) process is described. The maximum draw angle for SPIF is defined and specific values are given for 3003-0 and 5754-0 aluminium. Forming limit diagrams (FLDs) are developed for incremental forming of aluminium sheet, using SPIF.
J Jeswiet, D Young
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Methods of Establishing Forming Limit Diagram of Tube Hydroforming

Advanced Materials Research, 2012
Forming severity is one of the significant indexes to assess formability of tube hydroforming. The state of strain can be accurately reflected when tube reaches forming limit, mechanical rules during forming processes can be revealed as well by using the forming limit diagram (FLD).
Guo Lin Hu, Lian Fa Yang, Jian Wei Liu
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Forming limit diagrams of tubular materials by bulge tests

Journal of Materials Processing Technology, 2009
This study uses bulge tests to establish the forming limit diagram (FLD) of tubular material AA6011. A self-designed bulge forming apparatus of fixed bulge length and a hydraulic test machine with axial feeding are used to carry out the bulge tests. Loading paths corresponding to the strain paths with a constant strain ratio at the pole of the bulging ...
Yeong-Maw Hwang, Yi-Kai Lin, Han-Chieh Chuang   +2 more
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Prediction of the forming limit diagrams in pulsatory straining

Journal of Materials Processing Technology, 1994
The 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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