Research on Forming Efficiency in Double-Sheet Electromagnetic Forming Process

Qiu, Li; Wang, Bin; Abu-Siada, A.; Xiong, Qi; Zhang, Wang; Ge, Weikang; Liu, Chang; Jiang, Lan; Chen, Zhong

doi:10.1109/access.2020.2968049

Cited by 17 publications

(9 citation statements)

References 22 publications

(20 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the electromagnetic forming process, there is a strong coupling of the electromagnetic field, structural field and temperature field. Thus, finite element analysis is used to precisely simulate the electromagnetic forming physical process [22,23]. In this paper, COMSOL software is used to establish two-dimensional axisymmetric model of the electromagnetic tube expansion process [24,25].…”

Section: Electromagnetic-structure Coupling Modelmentioning

confidence: 99%

Parametric Simulation Analysis of the Electromagnetic Force Distribution and Formability of Tube Electromagnetic Bulging Based on Auxiliary Coil

et al. 2020

Self Cite

View full text Add to dashboard Cite

Tube electromagnetic bulging has been given much attention due to its superior advantages in the field of light alloy processing. However, the conventional tube electromagnetic bulging process exhibits some critical issues that restrict its wide industrial applications. This includes non-uniform axial deformation and poor forming performance such as wall thickness thinning. This paper proposes a costeffective solution for such issues through simultaneous radial and axial electromagnetic force loading using an auxiliary driving coil. In this regard, the influence of the auxiliary coil geometrical parameters on the electromagnetic force distribution and tube forming performance is investigated using electromagneticstructure coupling model of the bulging process. The robustness of the new proposed method is validated by comparing its electromagnetic force distribution and tube forming performance with the traditional cylindrical coil method, currently used by industry practice. Numerical results show that the introduction of the auxiliary coil may effectively weaken the radial electromagnetic force at the end of the tube and solve the uneven axial deformation issue. Based on the obtained results, the maximum uniform deformation area is increased from 6.9mm to 35.1mm. The tube relative wall thinning issue is reduced and the relative wall thickness reduction of the pipe is found to be 0.01661. The axial electromagnetic force can be further improved by adjusting the geometrical parameters of the coil and the proposed electromagnetic bulging can effectively increase the uniform deformation range of the tube.

show abstract

Section: Electromagnetic-structure Coupling Modelmentioning

confidence: 99%

Parametric Simulation Analysis of the Electromagnetic Force Distribution and Formability of Tube Electromagnetic Bulging Based on Auxiliary Coil

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…Sheet metal forming technology based on electromagnetic repulsive force is widely used in several applications such as deep forming of sheet metals assisted by radial force [16], deep forming of large sheet metals under axially movable coils [17], and optimization of forming precision of sheet metals [18], [19]. These studies indicated that when a pulsed current is circulated in the coil, a time-varying magnetic field with constant direction and varying strength is generated.…”

Section: Principle and Design A Basic Principle Of Electromagnetmentioning

confidence: 99%

A Dual-Coil Method for Electromagnetic Attraction Forming of Sheet Metals

et al. 2020

Self Cite

View full text Add to dashboard Cite

Electromagnetic forming is a novel technology in which a coil is used to generate a pulsed Lorentz force for shaping sheet metal pieces. However, the Lorentz force between the coil and the sheet metal is generally repulsive due to the Lenz's Law, which limits the practical application of this technology. To break this bottleneck, a dual-coil method is proposed to generate attractive Lorentz force, which is then used to form sheet metals. The theoretical principle of this method is presented, and an infinite element model is established to simulate the forming effect. The simulation results show that an A1060-O plate with a diameter of 140 mm and thickness of 1 mm can be attractively shaped under this method. The maximum axial displacement of the plate reaches 2.74 mm. Unfortunately, a dent exists in this situation. Further analysis indicates that this dent can be eliminated by increasing the inner and outer diameters of the coils. Further, it is found that when the capacitance value of the long pulse-width discharge circuit is set to 5.6 mF and the initial discharge voltage is set to 10.690 kV, the sheet metal attains the best shape.

show abstract

“…In [32], this model is used to study the forming efficiency in double sheet electromagnetic forming process. Fig 6 (a) shows experimental results published in [32] while Fig 6 (b) depicts the corresponding simulation results using the model proposed in this paper. Comparing the two plots in Fig.…”

Section: ) Mechanical Fieldmentioning

confidence: 99%

Study of a Topology for Plate Electromagnetic Forming Based on Inner Reverse and Outer Positive Double Coil Loading

et al. 2020

Self Cite

View full text Add to dashboard Cite

While electromagnetic forming is widely used for aluminum alloy materials, the nonuniformity of plate radial deformation is still a key issue that restricts the wide development of this technology. This paper presents a new electromagnetic-forming topology. The proposed topology comprises outer ring double-coil plates along with an inner loop driving coil of a small number of turns whose geometrical parameters are optimized to adjust the induced eddy current of the plate. Numerical simulation results show that the presence of an inner ring driving coil shapes the magnetic field in a manner that the radial electromagnetic force is concentrated close to the edge of the die which affects the center of the plate. With optimum design for the geometrical parameters of the proposed inner ring driving coil, the electromagnetic force distribution can be adjusted over the plate, resulting in an improved plate deformation with an increase in the maximum uniform deformation area from 24mm to 65mm. Results also show that the proposed inner and outer ring double coil loading method possesses superior advantages over the traditional flat spiral coil loading method.

show abstract

Research on Forming Efficiency in Double-Sheet Electromagnetic Forming Process

Cited by 17 publications

References 22 publications

Parametric Simulation Analysis of the Electromagnetic Force Distribution and Formability of Tube Electromagnetic Bulging Based on Auxiliary Coil

Parametric Simulation Analysis of the Electromagnetic Force Distribution and Formability of Tube Electromagnetic Bulging Based on Auxiliary Coil

A Dual-Coil Method for Electromagnetic Attraction Forming of Sheet Metals

Study of a Topology for Plate Electromagnetic Forming Based on Inner Reverse and Outer Positive Double Coil Loading

Contact Info

Product

Resources

About