Electromagnetic forming of aluminum alloy strip by imposing inverse current instead of inducing eddy current

In the conventional electromagnetic forming processes, the Lorentz force is induced by the eddy current in the specimen, so the coil should be specifically designed to form the electrical current return. Here, a novel electromagnetic forming method is suggested for aluminum alloy strip or profile, i...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2020-12, Vol.111 (11-12), p.3481-3488
Main Authors: Zeng, Xiaoyong, Meng, Zhenghua, Liu, Wei, Huang, Shangyu, Zhou, Shoulu, Lin, Yangzhe
Format: Article
Language:English
Subjects:
Actuators
Aluminum alloys
Aluminum base alloys
CAE) and Design
Coils
Coils (strip)
Computer-Aided Engineering (CAD
Copper
Eddy currents
Electromagnetic forming
Engineering
Industrial and Production Engineering
Lorentz force
Mechanical Engineering
Media Management
Original Article
Parallel connected
Strip
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Summary:In the conventional electromagnetic forming processes, the Lorentz force is induced by the eddy current in the specimen, so the coil should be specifically designed to form the electrical current return. Here, a novel electromagnetic forming method is suggested for aluminum alloy strip or profile, in which the inverse current is imposed instead of eddy current to generate Lorentz force. As an electromagnetic actuator, a very simple strip of copper was connected in parallel with the aluminum alloy strip. When the impulse currents flowed synchronously along the opposite directions between the copper and aluminum alloy strips, the Lorentz force was generated to deform the aluminum alloy strip. The electromagnetic forming of AA5754 aluminum alloy strip by imposing inverse current was investigated by numerical simulation. It was finally validated by comparison with the experimental results.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-020-06356-w