Title: Numerical modelling of the electromagnetic forming of seamless steel tube compression processes

Authors: Nadimetla Thirupathi; Lalit Kumar; Sachin D. Kore

Addresses: School of Mechanical Science, India Institute of Technology Goa, Ponda, 403401, India ' School of Mechanical Science, India Institute of Technology Goa, Ponda, 403401, India ' School of Mechanical Science, India Institute of Technology Goa, Ponda, 403401, India

Abstract: This study explores electromagnetic forming (EMF), a contactless metal shaping method using intense magnetic fields to deform conductive metal beyond plastic limits. LS-DYNA software simulates EMF processes on steel tubes with a 76.2 mm outer diameter and a 71.40 mm inner diameter, employing a 9-turn solenoidal coil. The analysis covers displacement, velocity, magnetic fields, Lorentz forces, and stresses at different energy levels (8 kJ, 12.8 kJ, and 15.8 kJ). The study validates LS-DYNA's accuracy and establishes a direct correlation between higher energy input and increased electromagnetic parameters. Higher energy levels result in proportional increases in Lorentz forces, electromagnetic pressure, magnetic field strength, radial displacement, deformation velocities, and stress at the tube's midpoint. The findings underscore energy's pivotal role in electromagnetic compression processes. This comprehensive study, integrating numerical simulations and experimental validation, offers valuable insights for practical applications of EMF in high-strain metal forming, contributing to advancements across industries.

Keywords: EMF; electromagnetic forming; seamless tube compression; FEM analysis; LS-DYNA; Lorentz forces; stress-strain distributions.

DOI: 10.1504/IJCMSSE.2024.139007

International Journal of Computational Materials Science and Surface Engineering, 2024 Vol.12 No.1, pp.1 - 13

Received: 13 Jan 2023
Accepted: 08 Nov 2023
Published online: 07 Jun 2024 *

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