Research on structural reliability design method for flywheel rotor structure of IPACS

The attitude control and power function of IPACS are realized by changing the rotary angular velocity of the flywheel. During the process that the angular velocity rises and descends, the flywheel endures recurrence load, which leads to fatigue of flywheel rotor structure. To ensure the flywheel safety, it is necessary to design the flywheel rotor based on reliability. In this paper, the reliability theory of metal material and composite material are introduced. At the same time, the reliability design method of flywheel rotor is presented aimed at the flywheel structural characteristics. Furthermore, a 3-D finite element model is established and analyzed to obtain the stress contour. At last, an example is provided to illustrate the design method. The work in this paper provides theory foundation for the flywheel structure design and destroy test.