Electrohydraulic forming method and associated device

An electrohydraulic forming method, comprising:

• placing a blank of material to be deformed between a mould and a blank holder, the blank holder disposed inside a frame and mounted on at least one cylinder, a first end of each cylinder fixed to a bottom wall of the frame, a second end of each cylinder fixed to the blank holder, the mould mounted on a plate that is movable relative to the frame;
• filling with liquid a cavity containing electrodes to a predetermined liquid level;
• placing the blank of material in contact with the liquid in the cavity;
• generating a first electric discharge between the electrodes so as to deform the blank of material against the mould;
• after generating the first electric discharge, moving the mould nearer to the electrodes so as to reduce the distance between the electrodes and the blank of material, wherein the blank holder holds the blank of material during the moving the mould nearer to the electrodes;
• and
• generating at least one other electric discharge between the electrodes so as to deform the blank of material against the mould.