An electrohydraulic forming device for forming a blank of material includes: —an electrohydraulic forming chamber, —at least one central electrode extending in a so-called longitudinal direction and comprising a first end arranged inside the electrohydraulic forming chamber, —a body provided with a bore for introducing each central electrode into the electrohydraulic forming chamber, the electrohydraulic forming chamber being partially formed by said body, —a mould, and —at least one peripheral electrode electrically insulated from each central electrode, arranged at a distance from and around the end of a central electrode, and extending in a transverse plane relative to said central electrode.