Aeroengines are usually designed with a dual-rotor configuration for the rotating part. A dual-
rotor system has coupling characteristics introduced by an inter-shaft bearing, and the …

Bolted flange joint disk-drum structures (BFJDDSs) are key components in aero-engines,
however, bolt looseness inevitably occurs due to extreme service conditions. This can cause …

As an important component of rotating machinery, the rotor system (RSM) has a decisive
effect on the system dynamics. Most previous works established the RSM dynamic model …

Bolting joint is widely used in aero-engine, but the existing analysis theory of bolting joint
interface strength connection completely ignores the aerodynamic load borne by blade and …

Flexible shaft-disk combinations are essential in engines, turbines, and machinery.
Understanding their modal characteristics is vital for industry-wide performance, reliability …

Severe looseness and unbalance of a twin-spool rotor system aggravate the vibration of the
entire system, which may induce secondary faults such as intershaft rubbing. To address this …

The modeling of rotor systems involves various parameters prone to uncertainties. These
variations typically arise from the mathematical complexities of representing rotor system …

Rotor unbalance stands as one of the primary causes of vibration and noise in rotating
equipment. Accurate identification of unbalanced positions enables targeted measures for …

Underplatform dampers (UPDs) mitigate turbine blade vibrations in aeroengines through
friction dissipation generated by the contact interface. However, in UPD design …