Time-Dependent Errors Influence on the Transmission Error in Planetary Gears with Different Mesh Phasing

This work focuses on the effect of time-dependent errors in the behavior of planetary transmissions. More precisely, this work analyses the response of low-speed planetary transmissions to the presence of time-varying manufacturing errors such as run-out and index errors, which are some of the most common errors inherent to the gear manufacturing process. Thus, in order to observe the interaction of these transmissions to the presence of those errors the analysis focuses on its transmission error. In the context of this work transmissions with in-phase and sequentially phased mesh phasing are considered. These transmissions also implement a pair of state-of-the-art roller bearings modelled in the sun support. As a result of the error modelling, it is possible to see how the results for in-phase transmissions are not affected by the size of the error. However, in the sequentially phased transmissions the change in the geometry of the contacts varies the mesh phasing and leads to discrepancies in the transmission’s behavior.