In order to finish the safety design of rotor system under sudden unbalance

the principle of load reduction by cone wall fused under sudden load was analyzed

the active load reduction experimental system with changing stiffness support was designed and experimental verification was finished. Research shows that the essence of cone wall fuse capable of reducing load is to reduce the stiffness of rotor support

accordingly

reduce the critical speed

the supporting load and amplitude in the deceleration process. The active load reduction structure change the support stiffness adaptively using changing stiffness

and can simulate the load reduction of cone wall fuse completely. Furthermore

it can verify the principle of load reduction by low-cost and highly repetitive experiment

and provide experimental conditions and data support for safety design of sudden unbalance.