Influence of ingress impact considering the full-tooth meshing period on the dynamic behavior of helical gear systems

Meshing impact is one of the three major internal excitations that cause vibration and noise in gear systems. Ingress impact is the most significant component of meshing impact. Current research typically considers the ingress impact within a meshing period while neglecting the different impacts of the integrated systematic errors of each gear pair on it. However, in practical scenarios, it is unrealistic to presume that the systematic errors of each tooth are identical. Base pitch errors, for instance, are crucial metrics that reflect the quality of gear manufacturing, and empirical measurements have confirmed that these errors are indeed non-uniform. Therefore, the current calculation methods for ingress impact limit the accurate representation of the dynamic behavior of gear systems. Based on this, a model that captures the ingress impact throughout the full-tooth meshing period is established. When compared with the traditional calculation method, which solely considers the ingress impact in a single meshing period, the results demonstrate that the method proposed in this paper offers a superior description of the dynamic behavior of gear systems.