Results 181 to 190 of about 8,997 (209)
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International Journal of Mechanical Sciences, 2002
Springback, the elastically-driven change of shape of a part after forming, has been measured under carefully-controlled laboratory conditions corresponding to those found in press-forming operations. Constitutive equations emphasizing low-strain behavior were generated for three automotive body alloys: drawing-quality silicon-killed steel; high ...
Carden, W. D. +3 more
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Springback, the elastically-driven change of shape of a part after forming, has been measured under carefully-controlled laboratory conditions corresponding to those found in press-forming operations. Constitutive equations emphasizing low-strain behavior were generated for three automotive body alloys: drawing-quality silicon-killed steel; high ...
Carden, W. D. +3 more
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International Journal of Material Forming, 2008
Draw-bend tests performed some years ago on four aluminum alloys (2008-T4, 5182-O, 6022-T4, and 6111-T4) revealed that specimens can continue to change shape for long periods, up to 15 months, following forming and unloading [1]. Contemporaneous tests of autobody steels (DQSK, AKDQ and HSLA steels) tested under identical conditions showed no such time ...
H. Lim +3 more
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Draw-bend tests performed some years ago on four aluminum alloys (2008-T4, 5182-O, 6022-T4, and 6111-T4) revealed that specimens can continue to change shape for long periods, up to 15 months, following forming and unloading [1]. Contemporaneous tests of autobody steels (DQSK, AKDQ and HSLA steels) tested under identical conditions showed no such time ...
H. Lim +3 more
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2006
Abstract Springback refers to the elastically driven change of shape that occurs after deforming a body and then releasing it. This article presents an introduction to the concepts of springback simulation as well as recommendations for its practice in a metal forming setting of thin beams or sheets. It discusses bending with tension and
R.H. Wagoner, J.F. Wang, M. Li
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Abstract Springback refers to the elastically driven change of shape that occurs after deforming a body and then releasing it. This article presents an introduction to the concepts of springback simulation as well as recommendations for its practice in a metal forming setting of thin beams or sheets. It discusses bending with tension and
R.H. Wagoner, J.F. Wang, M. Li
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International Journal of Plasticity, 2013
Abstract For purposes of this review, springback is the elastically driven change of shape of a metal sheet during unloading and following forming. Scientific advances related to this topic have accelerated dramatically over roughly the last decade, since the publication of two reviews in the 2004–2006 timeframe ( Wagoner, 2004 , Wagoner et al ...
Wagoner, RH, Lim, H, Lee, MG
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Abstract For purposes of this review, springback is the elastically driven change of shape of a metal sheet during unloading and following forming. Scientific advances related to this topic have accelerated dramatically over roughly the last decade, since the publication of two reviews in the 2004–2006 timeframe ( Wagoner, 2004 , Wagoner et al ...
Wagoner, RH, Lim, H, Lee, MG
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Springback simulation and springback compensation of an aluminum outer panel
AIP Conference Proceedings, 2013In the present paper, the main factors which influence the accuracy of springback simulation are discussed, and the optimized parameters, which aim at obtaining an accurate springback simulation, and the full cycle simulation, which aims at the closest boundary condition between simulation and practice, are discussed.
Xiaojing Zhang +5 more
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Non‐linear finite element analysis of springback
Communications in Numerical Methods in Engineering, 1999Summary: The nonlinear finite element method is employed to investigate the springback behaviour of doubly curved, titanium, sheet metal parts that are formed with reconfigurable tooling. The results of laboratory experiments confirm the predicted phenomena and the accuracy of the finite element simulations.
Kutt, Lembit M. +4 more
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Springback and time-dependent springback of 1Cr18Ni9Ti stainless steel tubes under bending
Materials & Design, 2010In this paper, the springback and time-dependent springback of 1Cr18Ni9Ti stainless steel tubes subject to bending is explored. Rotary draw bending tests have been carried out and marked time-dependent springback has been observed. A novel model in which time-dependent springback is associated with strain hardening is presented as an attempt to analyze
null Daxin E, Yafei Liu
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AIP Conference Proceedings, 2005
The number of through‐thickness integration points (NIP) required for accurate springback analysis following sheet forming simulation is the subject of confusion and controversy. Li and Wagoner recommended, in 1999, based on a finite element analysis (FEA) of draw‐bending springback, the use of 25 integration points (IP).
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The number of through‐thickness integration points (NIP) required for accurate springback analysis following sheet forming simulation is the subject of confusion and controversy. Li and Wagoner recommended, in 1999, based on a finite element analysis (FEA) of draw‐bending springback, the use of 25 integration points (IP).
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Tooling design accomodating springback errors
Journal of Materials Processing Technology, 1992Abstract Tooling design and development for sheet metal forming is an expensive process in terms of both time and current manufacturing cost. In the present work it is shown that Finite Element Analysis can be used in tooling design procedures by accurately predicting and accomodating for errors due to springback in sheet metal forming operations. To
A.P. Karafillis, M.C. Boyce
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A Methodology for Springback Prediction
SAE Technical Paper Series, 2001<div class="htmlview paragraph">The springback of simple geometries can be predicted through theoretical analysis, however problems arise when transferring this analysis to the manufacturing environment. To determine why this is the case, a study of small curvature free bending through theoretical analysis, manufacturing data and Finite Element ...
Mary Gotzinger +3 more
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