Effect of temperature on plastic deformation of sheet by electromagnetic force

Based on the new method of controlling welding distortion with trailing electromagnetic force, the electromagnetic force and the plastic deformation of sheet by electromagnetic force at different temperature was simulated by ANSYS. The circuit–electromagnetic–structural coupling was carried out with physical environment method. The results show that the magnitude of peak axial force decreases and the magnitude of peak radial force increases with increasing temperature. The variation of electromagnetic force with temperature is nonlinear. The variation rate of axial force decreases and the variation rate of radial force increases with increasing temperature. The driving force of sheet deformation decreases with increasing temperature because the axial force is larger than radial force so much. But the plastic strain of sheet by electromagnetic force increases with increasing temperature due to the decreasing yield strength. Compared with the post-welding processing, the energy supplied to processing is reduced when the electromagnetic force is applied to the controlling of welding distortion as an impactive source during welding.