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.

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.

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

scholarly journals Physical modeling of metamatereals on the basis of the flat spiral coil

2020 ◽  
Vol 6 (4) ◽  
pp. 18-30
Author(s):  
Z.R. Idiatullov ◽  
◽  
I.I. Ahmetov ◽  
M.M. Fatyhov ◽  
S.V. Spiridonov ◽  
...  
Keyword(s):  
Experimental Data ◽  
Transmission Coefficient ◽  
Physical Modeling ◽  
Geometric Shape ◽  
Spiral Coil ◽  
Geometric Shapes ◽  
Modeling Methods ◽  
Spiral Coils ◽  
Flat Spiral

In this work, the problems of physical modeling of metamaterials based on flat spiral coils with different geometric shapes were considered. The main parameters of the structures metamaterial modeling, methods of creation, as well as their unique properties are considered. As a result of physical modeling, structures were obtained that model the metamaterial with different values of dimensions and parameters. On the basis of the experimental data, the best variant of the geometric shape of the structure element was determined, based on the highest transmission coefficient.

Electromagnetic Formability of an Aluminium Ice Tray

2014 ◽  
Vol 611-612 ◽  
pp. 1124-1131 ◽  
Author(s):  
Jyoti Kumar Doley ◽  
Sachin D. Kore
Keyword(s):  
Strain Rate ◽  
High Speed ◽  
Paper Analysis ◽  
Electromagnetic Forming ◽  
Forming Process ◽  
Spiral Coil ◽  
Finite Element Software ◽  
Metal Forming Process ◽  
Sequential Coupling ◽  
Explosive Forming

Electromagnetic forming (EMF) is a typical high speed forming process using the energy density of a pulsed magnetic field to form work sheets made of metals with high electrical conductivity like aluminium alloys, which have low formability at low strain rate. Under high velocity forming, metallic materials exhibit an increase of flow stress and ductility with increasing deformation rate. Therefore, materials of lower ductility can be deformed to higher strains using high strain rate deformation processes such as electromagnetic or explosive forming techniques. In this paper analysis of an electromagnetic sheet metal forming process is carried out by using commercial finite element software LS-DYNA®, which incorporates a sequential coupling method involving electromagnetic field, structural and thermal solutions. Study of process parameters for forming aluminium ice tray (used in refrigerator) by Electromagnetic forming process has been carried out, simulation was done involving a die, Al worksheet and a spiral coil.

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

Dual Electromagnetic Forming Using Single Uniform Pressure Coil

2014 ◽  
Vol 611-612 ◽  
pp. 723-730
Author(s):  
Chandrahas Patel ◽  
Sachin D. Kore
Keyword(s):  
High Speed ◽  
Bottom Layer ◽  
Electromagnetic Forming ◽  
Uniform Pressure ◽  
Forming Process ◽  
Electrically Conductive ◽  
Maximum Deformation ◽  
Uniform Pressure Coil ◽  
High Speed Forming ◽  
Sheet Metal Workpiece

Electromagnetic Forming (EMF) is a high-speed forming process that can be applied for shaping, joining and cutting of workpieces made of electrically conductive material eg. aluminium. This paper proposes a dual electromagnetic forming method. Energy efficiency of the dual electromagnetic forming is compared with the single sided electromagnetic forming using FEM simulations. In uniform pressure rectangular coil, the top layer of the coil assists in the deformation of the workpiece while the bottom layer hinders the workpiece deformation.To make the bottom layer of the coil also to assist in the deformation of the workpiece, a uniform pressure rectangular coil is designed and placed between the two sheet metal workpiece. The efficiency of the two processes are compared by determing the maximum deformation obtained for each case.

An Analysis of Electromagnetic Sheet Metal Forming Process

2014 ◽  
Vol 526 ◽  
pp. 9-14 ◽  
Author(s):  
E. Paese ◽  
Pedro A.R. Rosa ◽  
Martin Geier ◽  
Roberto P. Homrich ◽  
R. Rossi
Keyword(s):  
Sheet Metal Forming ◽  
Metal Forming ◽  
High Speed ◽  
Flat Plates ◽  
Forming Process ◽  
Spiral Coil ◽  
Metal Forming Process ◽  
High Speed Forming ◽  
Flat Spiral ◽  
Free Bulging

Electromagnetic forming (EMF) is a high-speed forming process that uses energy density of a pulsed magnetic field to deform metallic workpieces. This paper presents a method to calculate the electromagnetic force in thin flat plates using a flat spiral coil as an actuator. The method is based on the Biot-Savart law, and the solution of magnetic induction integral equations is performed inside Matlab®by a numerical method based on discretizing the EMF system in a system of ordinary differential equations that couple the electric and magnetic phenomena. Free bulging experiments and a comparison with Ansoft Maxwell®software are presented demonstrating a good correlation with the proposed implementation.

Coil-less electromagnetic forming process with uniform-pressure characteristics for shaping sheet metals

2021 ◽  
Vol 70 ◽  
pp. 140-151
Author(s):  
Quanliang Cao ◽  
Xian Li ◽  
Zhenhao Li ◽  
Limeng Du ◽  
Liangyu Xia ◽  
...  
Keyword(s):  
Electromagnetic Forming ◽  
Uniform Pressure ◽  
Sheet Metals ◽  
Forming Process ◽  
Pressure Characteristics
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