Investigation of the free expansion of thin-walled tubular parts by pulsed-magnetic field

Abstract Magnetic-pulse processing is the process of converting the preliminarily accumulated electrical energy of the capacitor into the plastic deformation work of the workpiece. The technological processes of magnetic-pulse processing have complex electromechanical nature and also associated with high strain rates. These process parameters are difficult to determine experimentally, so it is proposed to perform and analyze them through numerical modeling. This article presents a study of the expansion rate of a tubular workpiece and its effective plastic deformation by pulsed- magnetic field. The influence of process parameters on free tube expansion is discussed in detail. The results were obtained through 3D finite element modeling, using the ANSYS software. The development of such a finite element modeling model makes it possible to exclude the conduct of experimental studies to detect the magnetic-field and the velocities, which are involved in the process. Numerical research makes it possible to determine the optimal value of the pulsed-magnetic field pressure for free expansion of tubular parts.