Hai-ping Yu

TL;DR: In this paper, an experimental scheme of EMAS was established according to the conventional stamping of cylindrical parts from aluminum and the formability encountered was discussed, and a multi-step, loose coupling numerical scheme was proposed to investigate the deformation behaviors based on the ANSYS Multiphysics/LS-DYNA platform through establishing user-defined subroutines.

TL;DR: In this article, the effects of the length of solenoid coil on tube compression in electromagnetic forming were investigated either by theory analysis or through sequential coupling numerical simulation, and the results showed that the amplitude of coil current waveform and the current frequency decrease with the increase of the coil length.

TL;DR: In this paper, the effects of electromagnetic forming parameters such as voltage and die depth on material deformation characters were investigated in micro bulging experiments on T2 copper, and the results showed that width and depth of micro channel increase with the increases of voltage with a certain die depth, moreover, forming depth reaches the maximum at 7 500 V.

TL;DR: In this article, the authors investigated the tendency of homogeneous radial deformation in aluminum tube during electromagnetic compression and showed that the tendency depends on the length ratio of tube to coil, which has a critical value (Rc) corresponding to the relatively homogeneous deformation along axial direction.

TL;DR: In this paper, the magnetic pulse joining (MPJ) between 3A21 aluminum alloy and steel 20 tubes was experimentally investigated with a solenoid coil assisted by a field shaper and the results showed that the metallurgical joints can be obtained at a voltage of 15 kV, a radial gap of 1.2-1.4 mm, and a slope angle of 3°-7° in the lapping area.