FEA of electromagnetic forming using a new coupling algorithm: effects of strain hardening properties and anisotropy

Ali Hassan, M.M. Nemat-Alla, M.G. El-Sebaie

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Abstract

—Electromagnetic forming is a sheet metal forming technique which utilizes magnetic fields to drive the workpiece deformation at
high speed. Modeling of such dynamic deformation is considered as a multi-physics simulation which involves electromagnetic model and
mechanical model and a coupling algorithm.
Material properties namely; anisotropy, strain hardening exponent and rate sensitivity index are key factor in controlling such dynamic
deformation. A necessity exists for a better understanding of deformation behavior upon variation of such material properties in order to control quality of the deformed product. In the current investigation, effects of anisotropy, strain hardening exponent and rate sensitivity index on deformation characteristics were studied via FE simulation. An enhanced loose coupling algorithm was proposed by the author in a previous research work and it was utilized in the current research. The simulation results showed that bulge height were inversely proportional to anisotropy value and rate sensitivity and proportional to strain hardening exponent. However, response of thickness and thickness uniformity were opposed to response of bulge height.
Original languageEnglish
Pages (from-to)1069-1075
Number of pages7
JournalInternational Journal of Scientific & Engineering Research
Volume5
Issue number12
Publication statusPublished - 1 Dec 2014
Externally publishedYes

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