Innovative Design of Flexible Bogie Beam with Permanent Magnet Direct Drive

An innovative design of flexible bogie beam structure with permanent magnet direct drive is introduced. The key of the beam structure is the innovative ‘cross board’, providing a possible flexible structure between two side frames, replacing the conventional box type beam. The structure has characteristics of smaller wheelbase, low stress in strength, high stiffness in anti-diamond stiffness. The influence of cross board key parameters on stiffness in all directions is deducted, and the derived formula is verified with finite element software.