Electromagnetic Force Distribution and Deformation Homogeneity of Electromagnetic Tube Expansion With a New Concave Coil Structure

Qiu, Li; Li, Yantao; Yu, Yijie; Abu-Siada, A.; Xiong, Qi; Li, Xiaoxiang; Li, Liang; Su, Pan; Cao, Quanliang

doi:10.1109/access.2019.2923264

Cited by 43 publications

(35 citation statements)

References 18 publications

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“…In [19], the authors have used this model to study the free electromagnetic bulging of tube with concave coils. Obtained simulation results were in good agreement with the experimental ones which attests the high accuracy of the simulation model.…”

Section: Mechanical Field Analysismentioning

confidence: 99%

“…In both types, uniformity of workpiece deformation has been a sustained issue that has not been fully resolved yet regardless the several attempts presented in the literature [17,18]. For example, a concave driving coil is proposed in [19]. While this type of coil could improve the uniformity of tube axial forming, its complex structure may make it infeasible for practical implementation.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Analysis of Tube Expansion by Electromagnetic Forming Using Magnetic Field Shaper

et al. 2020

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Uneven axial deformation is the current main issue of the tubes electromagnetic bulging technology which calls for innovative and cost-effective solutions. This paper presents a new method to overcome the above-mentioned issue based on employing a magnetic field shaper. The proposed magnetic field shaper is employed in the middle of the pipe and the driving coil. Induced eddy current control is realized by changing the structural parameters of the magnetic field shaper; thereby regulating the electromagnetic force distribution. The effectiveness of the proposed method is investigated through numerically comparing the electromagnetic performance of two EMF setups; traditional coil-based loading model and magnetic field shaper driving coil-based loading model proposed in this paper. The influence of the magnetic field shaper structural parameters on the tube electromagnetic forming performance is examined for optimum structure design. Results reveal that the concave profile of the radial electromagnetic force in the traditional loading method can be effectively improved using the proposed loading in this paper. The introduction of a magnetic field shaper not only changes the induced eddy current distribution, but also regulates the electromagnetic force profile in the axial-direction of the pipe which effectively enhances the uniform range of the pipe electromagnetic bulging, the maximum uniform deformation area is increased from 9mm to 35mm.

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Section: Mechanical Field Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Tube Expansion by Electromagnetic Forming Using Magnetic Field Shaper

et al. 2020

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“…The bulging of the plate is mainly due to the axial electromagnetic force generated by the interaction of the radial magnetic flux density and the induced eddy current on the plate. Lorentz force in radial (Fr) and axial (Fz) directions are [13]:…”

Section: Emf Principle and The Proposed Topologymentioning

confidence: 99%

“…Compared with conventional mechanical processing, electromagnetic forming can improve materials deformation performance and enhance its forming margin by 5-10 times due to its high strain rate (10 3 -10 5 s -1 ) [9][10][11]. At the same time, electromagnetic forming exhibits noncontact electromagnetic force which facilitates improved surface quality of the formed plate [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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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.

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“…With the development of the economy and of technology, vehicles are becoming increasing diversified. Energy saving and emission reduction methods have been given increasing attention [1]. Aluminum and its alloys have become the first choice for lightweight vehicles because of their good mechanical properties and low density [2].…”

Section: Introductionmentioning

confidence: 99%

Analytical Modeling and Optimization Design of an Electromagnetic Pulse Welding Device With a Field Shaper for Metal Plates

Zhang

Wang

et al. 2020

IEEE Access

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An electromagnetic pulse welding (EMPW) system is a complex multifield coupling system. Using finite element software to simulate its processes can better guide the design of the electromagnetic pulse welding system and the analysis of the welding mechanism. However, the existing finite element software has a complex model, involves a large amount of calculation, and is time consuming, which is not conducive to the optimization of the welding device. In this paper, an equivalent circuit model based on an improved current wire method is proposed, and the welding process is modeled and analyzed, and then compared with the simulation results of the finite element software COMSOL. The results show that the analytical model is accurate and effective, and it can reduce the calculation time and improve the processing efficiency. Second, based on the equivalent circuit model and taking the maximum impulse of the electromagnetic force as the optimization objective, the shape parameters of the field shaper and the number of turns of the coil in the electromagnetic welding device for plates based on the field shaper are optimized, and the optimal parameters are obtained. Finally, the welding equipment is designed with the optimal parameters, and the electromagnetic welding platform is built. An SS304 stainless steel plate and A1060 aluminum plate with a thickness of 1 mm are welded, and the dissimilar metal plates are well connected. INDEX TERMS Electromagnetic pulse welding; Improved current wire method; Equivalent circuit model; Optimize; Field shaper; Maximum impulse; Welding platform.

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Electromagnetic Force Distribution and Deformation Homogeneity of Electromagnetic Tube Expansion With a New Concave Coil Structure

Cited by 43 publications

References 18 publications

Numerical Analysis of Tube Expansion by Electromagnetic Forming Using Magnetic Field Shaper

Numerical Analysis of Tube Expansion by Electromagnetic Forming Using Magnetic Field Shaper

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

Analytical Modeling and Optimization Design of an Electromagnetic Pulse Welding Device With a Field Shaper for Metal Plates

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