Abstract

Using multi-body dynamics theory, we establish a multi-body system model of a 1.5WM wind power gearbox. Based on Hertz contact theory, The meshing force calculation method of gear meshing transmission is presented. This paper makes a simulation study about the time domain characteristics and frequency spectrum characteristics of meshing forces in planetary transmission, analysis the variation curves with time of dynamic load coefficients of multistage planetary transmission. The results show that the contact force in time domain has obvious dynamic characteristics when planetary gear transmission and its frequency domain showed modulation phenomenon. The carrier is the gear meshing frequency and modulation wave frequency is gear rotation frequency.

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