Gearbox is required to serve for≥ 30 min in helicopter design to improve survivability, when
the gear drive loses lubrication due to battle damage. Under such loss-of-lubrication …

The centrifugal effect is a natural phenomenon in rotor dynamics, significantly changing the
deformation responses in high-speed conditions. However, this phenomenon is generally …

The aero-engine spur gear system is often designed as thin rim structure due to lightweight
consideration, which leads to traveling wave resonance phenomenon when spur gear …

Nowadays, profile shift is one of the most powerful techniques to achieve high-performance
spur gear transmission system. Although this technique has been widely used in industry, its …

Considering the traveling wave resonance (TWR) phenomenon of the spiral bevel gear
system in the aero engine accessory casing, the flexible spiral bevel gear model is …

A dynamic model that evaluates the working condition of general spur gears based on a two-
phase approach is presented. A finite element model is preliminary developed to obtain the …

Backlash induces gear-teeth separation or back-side tooth mesh (BTM), resulting in gear
disengagement (GD), which heavily aggravates the dynamic performance and transmission …

Traditional gear dynamic models take the mesh stiffness obtained under static conditions as
an internal excitation. Under practical conditions, misalignment errors are unavoidable and …

Profile modifications are a common practice to mitigate torsional dynamics and enhance
mechanical efficiency in geared systems. Therefore, it is necessary to develop analytical …

With the increase of the rotor diameter and the deterioration of operating conditions, modern
wind turbines suffer from more and more significant time-varying non-torque loads, which …