Sheet metal electromagnetic forming using a flat spiral coil: Experiments, modeling, and validation

2019 ◽  
Vol 263 ◽  
pp. 408-422 ◽  
Author(s):  
Evandro Paese ◽  
Martin Geier ◽  
Roberto P. Homrich ◽  
Pedro Rosa ◽  
Rodrigo Rossi
Keyword(s):  
Sheet Metal ◽  
Electromagnetic Forming ◽  
Spiral Coil ◽  
Flat Spiral

Research on Workpiece Deformation in Electromagnetic Forming Process with Finite Element Method

2014 ◽  
Vol 989-994 ◽  
pp. 2702-2704
Author(s):  
Chang Peng ◽  
Li Qiu ◽  
Ke Shen Gong ◽  
Ding Jun Wang
Keyword(s):  
Electromagnetic Coupling ◽  
Basic Structure ◽  
Electromagnetic Forming ◽  
Forming Process ◽  
Spiral Coil ◽  
Electromagnetic Structure ◽  
Sequential Coupling ◽  
Flat Spiral ◽  
Free Bulging ◽  
Center Area

Electromagnetic forming is a kind of processing technology that use lorentz force to make rapid prototyping of metal workpiece, which can significantly improve the metal forming performance,and it is expected to become an emerging technology that alternative to traditional machining to process light alloy materials. Based on the understanding the basic structure of the electromagnetic coupling on the basis of physical process of electromagnetic forming, this article adopt ANSYS sequential coupling method to simulate the electromagnetic coupling process of electromagnetic structure, and analysis of tube electromagnetic forming and plate of workpiece in the process of free bulging deformation behavior. The solenoid coil tubing have an axis of symmetry due to bulging, and it’s electromagnetism load and constraint has symmetry, so its formability is uniform in hoop direction. When the plank free bulge, the distribution of the electromagnetic force caused by the flat spiral coil is not uniform,and the artifacts accelerate fastest in the part of the radius of coil 1/2, but the center area of the workpiece’s forming height is highest.

scholarly journals Electromagnetic Forming Analysis of the Al 99.0 Sheet with Tools of Different Configurations

2019 ◽  
Vol 290 ◽  
pp. 03010
Author(s):  
Dorin Luca ◽  
Cristina Biriş ◽  
Dorian Luca
Keyword(s):  
Electromagnetic Forming ◽  
Forming Process ◽  
Spiral Coil ◽  
Maximum Deformation ◽  
Manufacturing Procedure ◽  
Forming Analysis ◽  
Deformation Force ◽  
Spiral Coils ◽  
Flat Spiral ◽  
The Mathematical Model

Electromagnetic forming is an advanced manufacturing procedure, characterized by the fact that the tool carrying the deformation force does not touch the workpiece. This paper presents research regarding the electromagnetic forming of Al 99.0 (EN AW-1200) sheet with coils, having different configurations. The purpose of the research was to find the flat spiral coil configuration that ensures maximum deformation of the workpiece. Flat spiral coils with different gaps between the coil and the workpiece, and coils with different number of windings were tested. The influence of these parameters was monitored on the maximum strain of the free bulged parts. The analysis of the results obtained for different configurations of the flat spiral coils allowed the selection of the significant parameters that influenced the electromagnetic forming process of the Al 99.0 flat workpiece, which aimed to elaborate the mathematical model and to optimize the investigated process.

Numerical Analysis on Electromagnetic Forming of Automotive Sheets with Flat Spiral Coil

2014 ◽  
Author(s):  
Daeyong Kim ◽  
Hyeon Park ◽  
Ji Hoon Kim ◽  
Youngseon Lee ◽  
Myoung-Gyu Lee
Keyword(s):  
Numerical Analysis ◽  
Electromagnetic Forming ◽  
Spiral Coil ◽  
Flat Spiral

scholarly journals A comprehensive electromagnetic forming approach for large sheet metal forming

2017 ◽  
Vol 207 ◽  
pp. 54-59 ◽  
Author(s):  
Zhipeng Lai ◽  
Quanliang Cao ◽  
Xiaotao Han ◽  
Ning Liu ◽  
Xiaoxiang Li ◽  
...  
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Electromagnetic Forming ◽  
Large Sheet

Strip Size Optimization for Spiral Type Actuator Coil Used in Electromagnetic Flat Sheet Forming Experiment

2021 ◽  
Vol 875 ◽  
pp. 35-41
Author(s):  
Shakeel Akbar ◽  
Muhammad Adeel Aleem ◽  
Faisal Pirandad ◽  
Ahnaf Usman Zillohu ◽  
Muhammad Saifullah Awan ◽  
...  
Keyword(s):  
Lorentz Force ◽  
Eddy Currents ◽  
Sheet Forming ◽  
Width Ratio ◽  
Work Piece ◽  
Copper Strip ◽  
Cross Sectional ◽  
Spiral Coil ◽  
S Factor ◽  
Flat Spiral

Flat spiral coil for electromagnetic forming system has been modelled in FEMM 4.2 software. Copper strip was chosen as material for designing the actuator coil. Relationship between height to width ratio (S-factor) of the copper strip and coil’s performance has been studied. Magnetic field intensities, eddy currents and Lorentz force were calculated for the coils that were designed using six different 'S-factor' values (0.65, 0.75, 1.05, 1.25, 1.54 and 1.75), keeping the cross-sectional area of strip same. Results obtained through simulation suggest that actuator coil with S-factor ~ 1 shows optimum forming performance as it exerts maximum Lorentz force (84 kN) on work piece. The same coils was fabricated and used for electromagnetic sheet forming experiments. Aluminum 6061 sheets of thickness 1.5 mm have been formed using different voltage levels of capacitor bank. Smooth forming profiles were obtained with dome heights 28, 35 and 40 mm in work piece at 800, 1150 and 1250 V respectively.

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.

Experimental Study on Electromagnetic Forming of Copper Sheets

2013 ◽  
Author(s):  
Shanmuga Sundaram Karibeeran ◽  
Rajiv Selvam
Keyword(s):  
Sheet Metal ◽  
Metal Forming ◽  
Weight Ratio ◽  
Cost Effective ◽  
Electromagnetic Forming ◽  
Light Weight ◽  
Thin Sheets ◽  
Spring Back ◽  
Aerospace Applications ◽  
Copper Aluminum

The sheet metal forming of copper, aluminum alloys using conventional stamping processes posses various problems, because of the lower formability limits, spring back and the tendency to wrinkle compared to steel. The principle of electromagnetism using attractive force is adopted to modify the conventional stamping process, to form thin sheets of 0.05 mm thickness. Further, this process can be used to form many sheet metal components with less expensive tooling and lesser number of operations. This process ultimately leads to light weight, cost effective and better strength-to-weight ratio components required for aerospace applications. In this study, a maximum of 30.77 % reduction in diameter was observed at 2.75A using electromagnetic forming which leads to the absence of spring back.

scholarly journals Device for automated magnetic pulse stimulation of plant production processes

2020 ◽  
Vol 161 ◽  
pp. 01064
Author(s):  
Dmitriy Khort ◽  
Igor Smirnov ◽  
Alexey Kutyrev ◽  
Rostislav Filippov
Keyword(s):  
Magnetic Field ◽  
Plant Immunity ◽  
Low Frequency ◽  
Electrical Circuit ◽  
Plant Production ◽  
Physical Factors ◽  
Magnetic Pulse ◽  
Spiral Coil ◽  
Frequency Magnetic Field ◽  
Flat Spiral

Numerous studies of various physical factors show the promise of using pulsed magnetic fields in bioregulatory technologies to stimulate plant life and growth processes. As a result of exposure to garden strawberries with a low-frequency magnetic field, the quality of planting material improves, plant immunity increases, crop growth and development accelerates, the number and weight of berries increase. The article presents a developed automated device for magnetic pulse processing (MPP) of plants, considers the device, design and principle of its operation. The electrical circuit of the device and its technical characteristics are given. According to the results of a laboratory experiment, the magnetic field parameters of the working body of the device in the near zone of a flat spiral coil were established. The numerical value of the magnetic induction at a distance of 100 mm from the center of the coil is 8.3 mT.

Effects of the inner/outer diameters of flat spiral coils on electromagnetic sheet metal formation

2020 ◽  
Vol 109 (5-6) ◽  
pp. 1541-1551
Author(s):  
Ning Liu ◽  
Zhipeng Lai ◽  
Quanliang Cao ◽  
Yujie Huang ◽  
Meng Chen ◽  
...  
Keyword(s):  
Sheet Metal ◽  
Spiral Coils ◽  
Flat Spiral
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