Results 151 to 160 of about 1,020 (186)
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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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A Springback Compensation System Based on Springback Mechanics and Design Parameter Optimization
Volume 2: 32nd Computers and Information in Engineering Conference, Parts A and B, 2012A new springback compensation system based on springback mechanics is developed. The cause of springback is the bending moment before springback. To compensate the tool shape, it is necessary to satisfy the springback mechanical equation which is expressed by curvature and bending moment. In this system, the bending moment before springback is designed
Naoyuki Doke, Tetsuo Oya
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Robust springback compensation
AIP Conference Proceedings, 2013Springback simulation and springback compensation are more and more applied in productive use of die engineering. In order to successfully compensate a tool accurate springback results are needed as well as an effective compensation approach. In this paper a methodology has been introduce in order to effectively compensate tools. First step is the full
Bart Carleer, Peter Grimm
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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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Time Dependent Springback of a Magnesium Alloy
Materials & Design, 2014A time dependent springback was observed in a Mg-Al-Zn (AZ31) rolled sheet after three-point bending at room temperature (RT). The springback increased nonlinearly with time at RT. After bending, specimens were held in the bent state for up to five months, and the springback dramatically decreased after being held for one month compared with specimens ...
B. Li +5 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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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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Inelastic effects on springback in metals
International Journal of Plasticity, 2002zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Cleveland, R. M., Ghosh, A. K.
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Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 2009
In sheet metal forming processes, one of the main problems is the occurrence of springback/negative springback which can be influenced by various factors. A number of research scientists have conducted valuable investigation on springback phenomenon. However, the negative springback problem has rarely been investigated.
B Rahmani +3 more
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In sheet metal forming processes, one of the main problems is the occurrence of springback/negative springback which can be influenced by various factors. A number of research scientists have conducted valuable investigation on springback phenomenon. However, the negative springback problem has rarely been investigated.
B Rahmani +3 more
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Creep and anelasticity in the springback of aluminum
International Journal of Plasticity, 2004zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wang, J. F. +4 more
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