Analysis of Electromagnetic Force and Deformation Behavior in Electromagnetic Tube Expansion With Concave Coil Based on Finite Element Method

Qiu, Li; Yu, Yijie; Xiong, Qi; Deng, Changdong; Cao, Quanliang; Han, Xiaotao; Li, Liang

doi:10.1109/tasc.2017.2789287

Cited by 39 publications

(18 citation statements)

References 5 publications

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“…Babolian et al have defined the formula of any element of the one-order Chebyshev differential matrix when p = 1, as shown in Formula (2) [23][24][25][26][27]. And the two-order Chebyshev differential matrix can be directly obtained as shown in Formula (3).…”

Section: Chebyshev Pseudospectral Methodsmentioning

confidence: 99%

Fast Calculation Method for Transient Response of Transmission Line Based on Chebyshev Pseudospectral–Two-Step Three-Order Boundary Value Coupled Method

Yuan

et al. 2019

Symmetry

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A Chebyshev pseudospectral–two-step three-order boundary value coupled method is proposed and presented for handling the issue associated with complicated calculation, low precision, and poor stability in the process of transient response of transmission line. The first order differential equation in time domain is obtained via dispersing the telegraph equation in space domain by utilizing the pseudospectral method (PSM) based on Chebyshev polynomial. Then the two-step three-order boundary value method (BVM3) is presented and employed to resolve the obtained differential equation, so the numerical solution of the space discrete points can be obtained. Furthermore, the Chebyshev pseudospectral–two-step three-order boundary value coupled method (PSM-BVM3) is presented and compared with the Chebyshev pseudospectral–two-step two order boundary value coupled method (PSM-BVM2), the pseudospectral–differential quadrature method (PSM-DQM), and the pseudospectral method–trapezoid rule (PSM-TR) to validate the feasibility of the new proposed method. Theoretical analysis and numerical simulation reveal that the proposed Chebyshev PSM-BVM3 has a higher performance than the conventional method. For the proposed Chebyshev PSM-BVM3, the higher precision, efficiency, and numerical stability can be obtained and achieved only with fewer discrete points in the space domain, which is suitable for solving the transient response of transmission line. The proposed PSM-BVM3 can improve the drawback of numerical instability of the PSM and can also improve the disadvantage of the BVM as it is not easy to change the latter’s timestep size.

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Section: Chebyshev Pseudospectral Methodsmentioning

confidence: 99%

Fast Calculation Method for Transient Response of Transmission Line Based on Chebyshev Pseudospectral–Two-Step Three-Order Boundary Value Coupled Method

Yuan

et al. 2019

Symmetry

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“…From the above equations, the electromagnetic force distribution is playing an important rule in controlling the quality of the metal sheets forming process. As can be seen from (3), the electromagnetic force distribution is determined by the induced eddy current and the magnetic flux density [21]- [23]. The induced eddy current in the workpiece is difficult to control, hence the traditional EMF method exhibits singular force distribution that cannot meet the requirements of different metal sheets processing.…”

Section: Basic Principle and Designmentioning

confidence: 99%

Electromagnetic Force Distribution and Forming Performance in Electromagnetic Forming With Discretely Driven Rings

Qiu

Abu-Siada

et al. 2020

IEEE Access

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Electromagnetic forming is a method of high-speed metal workpiece forming technology that uses electromagnetic force pulses generated from the interaction of the magnetic flux density and workpiece induced eddy current. The main challenge of this technology is the control of the eddy current and magnetic flux density to perform various forming processes. This paper is aimed at overcoming this challenge by introducing a new electromagnetic sheet forming method based on discretely driven rings. In this method, a set of discrete conducting rings are placed between the driving coil and the metal workpiece to enhance the shaping process of the workpiece. By changing the number and position of the rings, the induced eddy current can be adjusted, and different electromagnetic force distribution profiles can be realized. COMSOL software is used to develop an electromagnetic field-structure coupling model of the proposed electromagnetic forming method. The characteristics of the electromagnetic force distribution and its effect on the workpiece forming process are analyzed. Results show that the electromagnetic force distribution profile can be controlled by adjusting the rings physical parameters such as diameter, material, and position. The proposed method can effectively improve the performance of the conventional electromagnetic forming technology and has the potential for implementation in wide industry applications.

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“…Similarly, when lightweight alloy material is used in manufacturing cars, the weight is reduced by 10%, and the fuel consumption is reduced by 6% to 8% [3]. However, alloy materials exhibit low room temperature forming plasticity, poor local drawability and they are prone to cracks and possessing large spring back which makes the traditional alloy processing technology not ideal [4][5]. Electromagneticbased high-speed forming technology employs pulsed electromagnetic force to process metal materials.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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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.

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Analysis of Electromagnetic Force and Deformation Behavior in Electromagnetic Tube Expansion With Concave Coil Based on Finite Element Method

Cited by 39 publications

References 5 publications

Fast Calculation Method for Transient Response of Transmission Line Based on Chebyshev Pseudospectral–Two-Step Three-Order Boundary Value Coupled Method

Fast Calculation Method for Transient Response of Transmission Line Based on Chebyshev Pseudospectral–Two-Step Three-Order Boundary Value Coupled Method

Electromagnetic Force Distribution and Forming Performance in Electromagnetic Forming With Discretely Driven Rings

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

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