装配对高速转子不平衡状态及动力响应分散性影响

Advanced aero-engine rotors require lightweight and high-efficiency designs, leading to increased rotational speeds. This makes their dynamic response highly sensitive to unbalanced states and assembly effects. To address this issue, the correlations between assembly parameters and rotor unbalanced states were investigated. An assembly-dependent rotor dynamic response dispersion model was developed, revealing how assembly affected response variability. Results indicated that different assemblies altered the deflection distribution of the rotor’s inertia spindle. Notably, the tilt of a thin turbine disc’s inertia spindle generated significant rotational inertia moment excitation under high-speed conditions. Variations in assembly parameters caused dispersion in the turbine disc’s spindle tilt amplitude, which critically contributed to high-speed rotor dynamic response dispersion.