Results 261 to 270 of about 2,512,776 (299)

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, 2005
The 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 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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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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Investigation of lubrication effects in the right side of the forming limit diagrams

AIP Conference Proceedings, 2014
In the present work, effect of lubrications was investigated in the right side of the forming limit diagram (FLD) by using the out-of-plane formability test. Interstitial-free steel (IF) sheet was used in this study. Primarily, mechanical properties of material like yield, tensile strengths, strain hardening coefficient (n), normal and planar ...
Kayali, Eyup Sabri, Şener, Bora
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Forming‐limit diagram numerical predictions: yield criteria studies

Communications in Numerical Methods in Engineering, 2002
AbstractIn this work, it is shown the numerical formulation for prediction of the right‐hand side of forming limit diagram (FLD). Five different yield criterias were used: Von Mises', Hill's (1948), Hill's (1979), Logan and Hosford's and Hill's (1993).
Ávila, Antonio F., Vieira, Evânio L. S.   +1 more
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Influence of Pre-Forming on the Forming Limit Diagram of Aluminum and Steel Sheets

Key Engineering Materials, 2007
This paper presents a method for the experimental determination of forming limit diagrams under non linear strain paths. The method consists in pre-forming the sheets under two different strain conditions: uniaxial and biaxial, and then stretching the samples, cut out of the preformed sheets, using a Nakajima testing setup.
Massimo Tolazzi, Marion Merklein
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Forming limit diagram of DP600 steel sheets during electrohydraulic forming

The International Journal of Advanced Manufacturing Technology, 2019
Electrohydraulic forming is a typical high-speed forming which can significantly improve the formability of sheet metal. The objectives of this paper are to explore the influence of preset wire length and lifting height on the equi-biaxial stretching forming limit of DP600 steel sheets during electrohydraulic forming.
Haiping Yu, Qiuli Zheng
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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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