Dynamic characteristics analysis and optimization of gas turbine herringbone compound planetary transmission system
ZHANG Hong
HU Yunbo
Abstract：To address the dynamic characteristics of the herringbone gear compound planetary transmission system of gas turbines under high-speed and heavy-load conditions,a semi-analytical dynamic modeling method based on the coupling of bending-torsion shaft-pendulum is proposed,revealing the influence law of multi-source excitation on the dynamic behavior of the system.By establishing a concentrated mass model including the sun gear,planetary gear and internal gear ring,combined with the deformation coordination equation and the dynamic differential equation,the influences of tooth profile error,modification parameters and load torque on dynamic loads,uniform load characteristics and vibration response were analyzed.The research adopted neural networks and genetic algorithms to optimize the gear modification parameters,reducing the vibration velocity of the box by 30.5％and significantly improving the dynamic performance of the system.Experimental verification shows that the errors between the theoretical values and the measured values of the equalization coefficient and vibration velocity are 4.3％and 12.5％respectively,verifying the accuracy of the model.This research provides theoretical guidance and technical support for the design and optimization of high-speed and heavy-load herringbone gear compound planetary transmission systems.
Keywords：gas turbineherringbone toothplanetary drivedynamics analysis
Publication Date：2025-07-20
Online Publishing Date：2025-09-08(First online date of this platform, not the publication date of the document)
Pages：12( 61-72 )