Numerical simulation for the magnetic force distribution in electromagnetic forming of small size flat sheet

2013 ◽  
Author(s):  
Xiaowei Chen ◽  
Wenping Wang ◽  
Min Wan
Keyword(s):  
Numerical Simulation ◽  
Magnetic Force ◽  
Electromagnetic Forming ◽  
Force Distribution ◽  
Flat Sheet

scholarly journals Electromagnetic Sheet Forming by Uniform Pressure Using Flat Spiral Coil

Materials ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 1963 ◽  
Author(s):  
Xiaohui Cui ◽  
Dongyang Qiu ◽  
Lina Jiang ◽  
Hailiang Yu ◽  
Zhihao Du ◽  
...  
Keyword(s):  
Service Life ◽  
Magnetic Force ◽  
Electromagnetic Forming ◽  
Force Distribution ◽  
Manufacturing Cost ◽  
Main Process ◽  
Uniform Pressure ◽  
Spiral Coil ◽  
Uniform Pressure Coil ◽  
Simulation Results

The coil is the most important component in electromagnetic forming. Two important questions in electromagnetic forming are how to obtain the desired magnetic force distribution on the sheet and increase the service life of the coil. A uniform pressure coil is widely used in sheet embossing, bulging, and welding. However, the coil is easy to break, and the manufacturing process is complex. In this paper, a new uniform-pressure coil with a planar structure was designed. A three-dimensional (3D) finite element model was established to analyze the effect of the main process parameters on magnetic force distribution. By comparing the experimental results, it was found that the simulation results have a higher analysis precision. Based on the simulation results, the resistivity of the die, spacing between the left and right parts of the coil, relative position between coil and sheet, and sheet width significantly affect the distribution of magnetic force. Compared with the structure and magnetic force on a traditional uniform pressure coil, the planar uniform pressure coil can produce a uniform magnetic force distribution on the sheet, reduce the manufacturing difficulty, reduce manufacturing cost, and enhance the service life for the coil.

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

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 16166-16173 ◽  
Author(s):  
Li Qiu ◽  
Ningxuan Yi ◽  
A. Abu-Siada ◽  
Jinpeng Tian ◽  
Yuwei Fan ◽  
...  
Keyword(s):  
Electromagnetic Force ◽  
Electromagnetic Forming ◽  
Force Distribution

Spherical cap bubbles in a flat sheet nanofiltration module: experiments and numerical simulation

2001 ◽  
Vol 56 (21-22) ◽  
pp. 6321-6327 ◽  
Author(s):  
Karim Essemiani ◽  
Gaëlle Ducom ◽  
Corinne Cabassud ◽  
Alain Liné
Keyword(s):  
Numerical Simulation ◽  
Spherical Cap ◽  
Flat Sheet

scholarly journals An Unsteady Momentum Source Method and Its Application in Simulation of Hovering Rotor

2020 ◽  
Vol 38 (3) ◽  
pp. 571-579
Author(s):  
Jiahao Guo ◽  
Zhou Zhou ◽  
Xu Li
Keyword(s):  
Numerical Simulation ◽  
Power Unit ◽  
Tip Vortex ◽  
Force Distribution ◽  
The Real ◽  
Source Method ◽  
Real Geometry ◽  
Unsteady Numerical Simulation ◽  
Solution Efficiency ◽  
The Revolution

The efficiency and accuracy of numerical simulation on power unit is the key to study the relevant aerodynamic layout with multiple rotating power units. However, the numerical simulation of the power unit using real geometry all faces the problem of low solution efficiency. Taking the rotor hovering state as an example, the real blade was firstly simplified and replaced by a thin mesh disk to establish the effective momentum source method. Then, using fan-shaped mesh region that changes with time to replace real blade and simulate the rotation, the unsteady momentum source method which could get the revolution of tip vortex was proposed. The results show that the momentum source method with the input of accurate blade force distribution can simulate rotor wake better, and the influence that blade geometry acts on wake mainly reflects in the blade force distribution. In addition, the unsteady momentum source method can simulate the revolution of tip vortex, and its consumptions of computing resources and calculation time are only about 1/8 of the unsteady numerical simulation based on the real geometry.

scholarly journals Large Ellipsoid Parts Manufacture Using Electromagnetic Incremental Forming With Variable Blankholder Structure

2021 ◽  
Author(s):  
Xiaohui Cui ◽  
Yan Ziqin ◽  
Chen Baoguo ◽  
Du Zhihao ◽  
Xiao Ang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Compressive Stress ◽  
Sheet Metal ◽  
Incremental Forming ◽  
Sheet Material ◽  
Electromagnetic Forming ◽  
Blank Holder ◽  
Load Bearing ◽  
Metal Thickness

Abstract The large ellipsoid parts are the main load-bearing components in the rocket tank, which are prone to wrinkle when using the traditional stamping. In order to solve the wrinkling problem in large parts, the EMIF method with a variable blank holder is proposed in this paper. The numerical simulation has shown that the sheet material near the blank holder is, as a consequence of stamping, subjected to circumferential compressive stress. When the drawing height was 100 mm, the sheet metal was notably wrinkled. In the electromagnetic forming (EMF) process, the sheet region facing the coil becomes thinner. However, the sheet metal thickness corresponding to the coil edge increases with the increase in forming height. If the EMF forming height is 150 mm, the sheet, which is in contact with the smooth mold, is deformed without a wrinkle. Compared to the traditional stamping, the EMF can significantly reduce the sheet metal wrinkling, improving the deformation height of the sheet metal smooth area.

New Forming Limits For Light Alloys By Means Of Electromagnetic Forming And Numerical Simulation Of The Process

2007 ◽  
Author(s):  
P. Jimbert ◽  
I. Ulacia ◽  
J. I. Fernandez ◽  
I. Eguia ◽  
M. Gutiérrez ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Electromagnetic Forming ◽  
Forming Limits ◽  
Light Alloys
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