Disclosed is a structural
dynamic design method for a high-pressure rotor of an aircraft engine. The relationship between high-pressure rotor model design parameters and
rotor vibration characteristics is determined, so that the design method and criterions are provided for
dynamic design of the high-pressure rotor, and the method is of great guiding significance to the design of the high-pressure rotor of the aircraft engine. The method includes: establishing a dynamic model and a
dynamic equation of the high-pressure rotor to obtain a
nondimensionalization characteristic equation; introducing an equivalent
critical speed, and determining a two-order
critical speed range of a high-pressure rotor
system according to the equivalent
critical speed; changing a conventional equilibrium amount configuration method by configuring residual disequilibrium amount phases; configuring a ratio of rotor pole rotation
inertia to
mass center rotation
inertia in design according to a specific
design objective; establishing configuration criterions for a rotor
bearing stiffness ratio. A conventional
design process is changed, structural dynamic active design of the high-pressure rotor is realized, the
design process is optimized beneficially,
design cycle is shortened, and the method has important construction value.