NDLI: Numerical study on electrohydraulic forming process to reduce the bouncing effect in electromagnetic forming

Content Provider	Springer Nature Link
Author	Woo, Min A An, Woo Jin Song, Woo Jin Kang, Beom Soo Kim, Jeong
Copyright Year	2016
Abstract	Electromagnetic forming (EMF) is a high-speed forming process that forms a blank by using Lorentz force. Because it is a high-speed process, the effects of high strain rate can enhance the formability of the blank. However, when the blank is deformed into a complex shape, bouncing occurs at the surface of the blank, thereby generating wrinkles in the metal. Therefore, electrohydraulic forming (EHF) is proposed in this paper to overcome the bouncing effect. EHF is a high-speed forming process that employs high voltage discharge in water. The shockwave resulting from the electric discharge propagates to the blank through the water and deforms the blank into the shape of the die. A numerical simulation of the EHF process was performed using the LS-DYNA program to examine the forming procedure in detail. In the simulation, an arbitrary Lagrange–Eulerian multimaterial formulation was used to describe the interaction between the fluid components. Furthermore, a coupling mechanism was used for modeling the fluid–structure interaction. The numerical results of EHF were compared to those of EMF. This comparison showed that the EHF process can overcome the bouncing effect and deform a blank into a complex shape.
Starting Page	1813
Ending Page	1825
Page Count	13
File Format	PDF
ISSN	02683768
Journal	The International Journal of Advanced Manufacturing Technology
Volume Number	89
Issue Number	5-8
e-ISSN	14333015
Language	English
Publisher	Springer London
Publisher Date	2016-08-02
Publisher Place	London
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Electromagnetic forming Bouncing effect Electrohydraulic forming Arbitrary Lagrange–Eulerian multimaterial Fluid–structure interaction Industrial and Production Engineering Media Management Mechanical Engineering Computer-Aided Engineering (CAD, CAE) and Design
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Mechanical Engineering Computer Science Applications Software

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