DONG Hao, FANG Zong-de, DU Jin-fu. Dynamics of a Dual Power-split Transmission Based on Loaded Tooth Contact Analysis[J]. International Journal of Plant Engineering and Management, 2013, 18(1): 30-36

Dynamics of a Dual Power-split Transmission Based on Loaded Tooth Contact Analysis
DONG Hao, FANG Zong-de, DU Jin-fu
School of Mechanical Engineering,Northwestern Polytechnical University,Xi'an 710073,P. R. China
In order to implement the dynamic characteristic of a dual power-split transmission,a dynamic mechanics model is built. Firstly,according to the method of theoretical analysis of the tooth contact analysis (TCA) and loaded tooth contact analysis (LTCA),the actual meshing process of each gear pairs is simulated, and the time-varying mesh stiffness excitations are obtained,which can improve the numerical precision. Secondly,by using the lumped mass method,the bending-torsional coupling three dimensional dynamic model of the dual power-split transmission is established,and the identical dimensionless equations are deduced by eliminating the effect of rigid displacement and the method of dimensional normalization. Finally,by the method of the fourth order Runge-Kutta algorithm with variable step lengths,the responses of this system in a frequency domain and time domain are obtained,and the dynamic load change characteristics of each gear pairs are analyzed. The results show that the establishment,solution and analysis of the system dynamics model could provide a basis for the dynamic design,and have an important significance for the dynamic efficiency analysis and dynamic performance optimization design of the dual power-split transmission.
Key words:    dual power split transmission    loaded tooth contact analysis    time-varying mesh stiffness excitation    bending-torsional coupling    dynamic load   
Received: 2013-01-08     Revised:
Funds: This paper is supported by the Natural Science Foundation of China under Grant No.51175424
Corresponding author:     Email:
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