OPTIMAL DESIGN OF HIGH-SPEED SHAFT COUPLING DISK PAD FOR 4 MW WIND POWER GENERATOR HAVING HYSTERESIS BEHAVIOR

This study is a verification of the method of optimizing the damping coefficient, representing the flexibility, which is a requirement of high-speed coupling for 4 MW wind power generators. A disk pad, essential to the flexibility of the coupling, was manufactured using glass fiber reinforced polymer (GFRP); the viscoelasticity was considered as a material property to describe the hysteresis behavior. Finite element analysis was performed to calculate the damping coefficient by varying the design parameters of thickness and width. A design plan was prepared to maintain the safety factor at 1.2 or higher under slip torque that is actually applied to the coupling, and to provide a maximum damping effect.