Dynamic analysis of electromagnetic sheet metal forming process using finite element method

Cao, Quanliang; Li, Liang; Lai, Zhipeng; Zhou, Zhongyu; Xiong, Qi; Xiao, Zhang; Han, Xiaotao

doi:10.1007/s00170-014-5939-8

Cited by 56 publications

(24 citation statements)

References 15 publications

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“…To better understand the basic physical phenomena during the EMF process, a simple finite element model was developed to analyze the dynamic behavior of the workpiece in our previous work (Cao et al, 2014), taking into account the effects of the sheet displacement and velocity on the discharging current and the distribution of magnetic field. However, the thermal model was not considered in the simulation and the discharge current density was assumed to be the same in each turn of the coil without considering the skin effect of conductors.…”

Section: Fea Model Of Electromagnetic Sheet Formingmentioning

confidence: 99%

See 1 more Smart Citation

Analysis and reduction of coil temperature rise in electromagnetic forming

Cao

Han

Lai

et al. 2015

Journal of Materials Processing Technology

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Section: Fea Model Of Electromagnetic Sheet Formingmentioning

confidence: 99%

“…In the electromagnetic model, the magnetic vector potential − → A is often chosen as a system variable to calculate electromagnetic parameters (Cao et al, 2014):…”

Section: Electromagnetic Field Modelmentioning

confidence: 99%

Analysis and reduction of coil temperature rise in electromagnetic forming

Cao

Han

Lai

et al. 2015

Journal of Materials Processing Technology

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“…ANSYS/EMAG and LS DYNA were used, but the effect of change in geometry on the magnetic field was not considered, which resulted in overestimation of sheet deformation. Correia et al (2008) used commercial finite-element code in ABAQUS/Explicit to study the deformation of sheet and influence of visco-plastic material behaviour in the free bulge electroforming process, neglecting the effect of velocity. This model was simpler and easy to implement because electromagnetic forces were calculated and then used as body load in the sheet deformation process.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental investigation of the effect of process parameters on sheet deformation during the electromagnetic forming of AA6061-T6 alloy

Khan

Jaffery

et al. 2020

Mech. Sci.

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Abstract. Electromagnetic forming is a high-speed sheet metal forming technique to form metallic sheets by applying magnetic forces. In comparison to the conventional sheet metal forming process, electromagnetic forming is a process with an extremely high velocity and strain rate, which can be effectively used for the forming of certain difficult-to-form metals. During electromagnetic forming, it is important to recognise the effects of process parameters on the deformation and sheet thickness variation of the sheet metal. This research focuses on the development of a numerical model for aluminium alloy (AA6061-T6) to analyse the effects of three process parameters, namely voltage, sheet thickness and number turns of the coils, on the deformation and thickness variation of the sheet. A two-dimensional fully coupled finite-element (FE) model consisting of an electrical circuit, magnetic field and solid mechanics was developed and used to determine the effect of changing magnetic flux and system inductance on sheet deformation. Experiment validation of the results was performed on a 28 KJ electromagnetic forming system. The Taguchi orthogonal array approach was used for the design of experiments using the three input parameters (voltage, sheet thickness and number of turns of the coil). The maximum error between numerical and experimental values for sheet thickness variation was observed to be 4.9 %. Analysis of variance (ANOVA) was performed on the experimental results. Applied voltage and sheet thickness were the significant parameters, while the number of turns of the coil had an insignificant effect on sheet deformation. The contribution ratio of voltage and sheet thickness was 46.21 % and 45.12 % respectively. The sheet deformation from simulations was found to be in good agreement with the experimental results.

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“…Cao et al (2014) studied the dynamic analysis of EMF process using finite element method (FEM). A numerical model based on the finite element software COMSOL has been developed for analysing the dynamic behaviour of the workpiece in the EMF process.…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis of effect of process parameters on electromagnetic free expansion of aluminium tube

Patel

Ghatule

Kore

2017

IJMPT

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Abstract:The paper focuses on the study of expansion velocity and effective plastic strain with numerical analysis of electromagnetic tube expansion. Effects of process parameters on EM free expansion of tube are discussed in detail. FEM results are obtained through 3D simulations with the help of EM module in LS-DYNA TM in which finite element method (FEM) for conductor and boundary element method (BEM) for surrounding air is implemented. FEM and BEM results are obtained from simulation and compared with available experimental data in the published literature. Increase in capacitance to increase energy is not favourable for electromagnetic forming. Variation in voltage to increase energy is suitable for electromagnetic forming.

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Dynamic analysis of electromagnetic sheet metal forming process using finite element method

Cited by 56 publications

References 15 publications

Analysis and reduction of coil temperature rise in electromagnetic forming

Analysis and reduction of coil temperature rise in electromagnetic forming

Numerical and experimental investigation of the effect of process parameters on sheet deformation during the electromagnetic forming of AA6061-T6 alloy

Finite element analysis of effect of process parameters on electromagnetic free expansion of aluminium tube

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