The purpose of the paper is the development of a static finite element model for a Nutation Speed Reducer (NSR) using program ANSYS (finite element analysis). A virtual model of the NSR was created by SolidWorks. Creating a model included the use of three-dimensional finite elements, such as solid cylinders and contact elements, to simulate the engagement between the teeth of the gears. The distribution of contact and bending stresses of the investigated reducer was predicted. The teeth contacts were modeled as gear surface contacts. The stress value obtained using three-dimensional analysis was an order of magnitude greater than the theoretical result. The reason for such a high estimate can be explained by the fact that the analysis was non-linear and due to the absence of teeth on the gear, which would lead to a lower stress value, as shown in the theoretical equation. Finite-element analysis helped to determine whether the developed product meets its functional requirements. This analysis was intended as a finite element analysis in a static state. However, a dynamic finite element model would be more appropriate, since it would take into account the rotation and natural frequencies of the gears and would be an accurate representation of the interlocking gears in real time.
Volume 11 | Issue 10