Abstract
A flywheel is applied in the various engineering fields for the energy storage system. The flywheel rotor in this study rotates at a high rotational speed of about 30 000 rpm. In the design, it is important to consider the fatigue strength under the condition of cyclic centrifugal force due to the varlation of rotation rate and to prevent the fracture accident of a high speed flywheel from the spincrack after the rotor has cracked by any chance. This paper proposes the reliable structure of flywheel rotor based on the concepts of fracture control to prevent the dangerous crash scattering the pieces of broken rotor. The fatigue life of this rotor is estimated by the fracture mechanics considering the randomness of the crack growth rate and furthermore, the spintest is carried out in order to confirm the propriety of the structure of rotor.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
