Abstract. The dynamic load-sharing characteristics of aircraft face gear
dual-power split transmission system (FGDPSTS) are taken as the research
object. Considering the factors of time-varying meshing stiffness,
comprehensive error, backlash, support clearance, spline clearance,
torsional stiffness, and support stiffness, the dynamic load-sharing model was
constructed based on the lumped-parameter method. The loaded tooth contact
analysis (LTCA) simulation method was used to calculate the time-varying
meshing stiffness. The dynamic load-sharing coefficient (DLSC) is obtained
by using Runge–Kutta method. The influences of errors, backlash, support
clearance, spline clearance, torsional stiffness and support stiffness on
DLSC were analyzed, and the biggest factors affecting dynamic load-sharing
performance were found out. The results show that the influence of the
backlash of the two-stage herringbone gear pair on the DLSC is more sensitive.
The influence of support clearance on the DLSC is less. The load-sharing
coefficient increases with the increase of the installation error and
eccentricity error, and the influence of the error of the two-stage gears on
the system load-sharing performance is the most sensitive. The torsional
stiffness has little effect on the load-sharing coefficient of one stage but
has great effect on the two-stage load-sharing coefficient. The influence of
support stiffness on the DLSC of two-stage is stronger. It provided a
theoretical basis for the dynamic stability optimization design of the
system.
Research on Dynamic Load-Sharing Characteristics of Two-Stage Asymmetric Star Gear System
