A study of tube electromagnetic forming

Song, Fuchuan; Zhang, Xiaolin; Wang, Z.R.; Liu, Yu

doi:10.1016/j.jmatprotec.2004.04.089

Cited by 29 publications

(12 citation statements)

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“…However, application and development of magnesium alloy is constrained by forming method. Electromagnetic forming technology is a high-energy rate forming technology that can effectively improve material formability [3][4][5][6]. It has the advantage of high speed and good controllability that magnesium alloys is formed by the technology.…”

Section: Introductionmentioning

confidence: 99%

Notice of Retraction: Cause of crack formation of magnesium alloy tube during electromagnetic forming

Wang

Piao

et al. 2010

2010 2nd International Conference on Computer Engineering and Technology

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The AZ31 magnesium alloy tube is used to electromagnetic forming experiment under the five kinds of input voltages, and cause of crack formation is analyzed. The analysis result shows that: adiabatic shear behavior and deformation localization are crack mechanism; electric difference, mechanical heterogeneity, uneven loading, and incomplete symmetry coil geometry are causes of crack formation. The ways of avoiding crack and increasing deformation degree are to improve comprehensive properties of the tube and to adjust deformation conditions during electromagnetic forming.

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Section: Introductionmentioning

confidence: 99%

Notice of Retraction: Cause of crack formation of magnesium alloy tube during electromagnetic forming

Wang

Piao

et al. 2010

2010 2nd International Conference on Computer Engineering and Technology

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“…The eddy currents generate another opposite magnetic field that repels the magnetic field of the coil. The repulsive pressure on the workpiece can be approximated by [13]:…”

Section: The Proposed Model Of Magnetic Pressurementioning

confidence: 99%

FEA of electromagnetic forming using a new coupling algorithm

Abdelhafeez

Nemat-Alla

El-Sebaie

2013

International Journal of Applied Electromagnetics and Mechanics

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Finite element modeling of electromagnetic forming includes modeling of mechanical aspects, modeling of electromagnetic aspects, and a coupling method between the two models. The electromagnetic problem is to determine the magnetic pressure and its temporal and spatial distribution. Whereas the mechanical problem is to find out workpiece deformation resulting from the magnetic pressure applied on this workpiece. Nonetheless complications in the simulation exist due to pressure variation with workpiece deformation. These difficulties can be resolved by using one of the known coupling algorithms; loose coupling, or strong coupling. But these coupling strategies either have low accuracy of results or take long simulation time. The current research introduces an enhanced loose coupling algorithm for simulation of electromagnetic sheet metals bulging. The proposed coupling strategy takes into account deformation effects on pressure without the need for solving the updated electromagnetic model every new time step. Comparison between present simulation results and experimental results of other researchers showed good agreement. Effective plastic strain, and effective plastic strain rate distribution and evolution were presented in addition to thickness and deflection evolution of the workpiece.

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“…Interest of aeronautical and automotive industries in high energy rate forming (HERF) processes, such as explosive, electromagnetic and electrohydraulic forming, has been growing in recent years due to their potential to form aluminium, titanium, high-strength steel and other low formability metallic materials (Song et al, 2004). The high strain rates achieved in HERF processes in comparison to conventional quasi-static metal forming operations lead to significant changes in the constitutive behavior of the materials and give rise to inertial effects which contribute to delay necking localization and ductile fracture (Mamalis et al, 2004;Gayakwad et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

A three-pronged approach to predict the effect of plastic orthotropy on the formability of thin sheets subjected to dynamic biaxial stretching

Rodríguez-Martínez¹,

N'souglo²,

Jacques³

2020

Preprint

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In this paper, we have investigated the effect of material orthotropy on the formability of metallic sheets subjectedto dynamic biaxial stretching. For that purpose, we have devised an original three-pronged methodology which includes a linear stability analysis, a nonlinear two-zone model and ?finite element calculations. We have studied 5 different materials whose mechanical behavior is described with an elastic isotropic, plastic anisotropic constitutive model with yielding based on Hill (1948) criterion. The linear stability analysis and the nonlinear two-zone model are extensions of the formulations developed by Zaera et al. (2015) and Jacques (2020), respectively, to consider Hill (1948) plasticity. The ?finite element calculations are performed with ABAQUS/Explicit (2016) using the unit-cell model developed by Rodriguez-Martinez et al. (2017), which includes a sinusoidal spatial imperfection to favor necking localization. The predictions of the stability analysis and the two-zone model are systematically compared against the ?finite element results --which are considered as the reference approach to validate the theoretical models-- for loading paths ranging from plane strain stretching to equibiaxial stretching, and for different strain rates ranging from 100 s-1 to 50000 s-1. The stability analysis and the two-zone model yield the same overall trends obtained with the ?finite element simulations for the 5 materials investigated, and for most of the strain rates and loading paths the agreement for the necking strains is also quantitative. Notably, the differences between the ?finite element results and the two-zone model rarely go beyond 5%. Altogether, the results presented in this work provide new insights into the mechanisms which control dynamic formability of anisotropic metallic sheets.

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A study of tube electromagnetic forming

Cited by 29 publications

References 0 publications

Notice of Retraction: Cause of crack formation of magnesium alloy tube during electromagnetic forming

Notice of Retraction: Cause of crack formation of magnesium alloy tube during electromagnetic forming

FEA of electromagnetic forming using a new coupling algorithm

A three-pronged approach to predict the effect of plastic orthotropy on the formability of thin sheets subjected to dynamic biaxial stretching

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