Optimal Design of a Quadrupole Armature Arm Based on Reverse Loading Method

Abstract

To solve the problem of separation of armature and rail at the tail of a quadrupole armature arm at the initial contact, the causes of separation are analyzed based on simplifying the armature arm into a cantilever beam. At the same time, to obtain the contour curve of the armature arm, a reverse loading method is proposed, and the rationality of this method is verified. In view of the shortcomings of the reverse loading method, an improved method of using finite element simulation to predict the deflection of the armature arm is proposed. The results show that the curve of the armature arm obtained by the improved reverse loading method is, at initial contact, without contact separation at the tail. The contact area and contact efficiency of the armature arm are significantly improved, and the pressure distribution on the contact surface is more uniform, which provides an effective contact state for pulse current.