Dynamic Analysis of the Helical Gear Transmission System in Electric Vehicles with a Large Helix Angle

Sliding friction is an important excitation for the vibration and noise of a transmission system. However, in cases where helix angle helical gear large, dynamic characteristics system electric vehicle caused by have not been explored explicitly. In this study, gears 30.5 degrees. A mesh stiffness calculation algorithm derived. model Motor Two-Stage at constant speed established. bench test carried out to verify model. employed. The are analysed after considering axial component. makes x direction increase. y suppressed friction. z has small change. components frequency domain also only make meshing force increase time domain. This indicates that needs be considered when analysed. study good reduction noise. may provide theoretical base condition monitoring vehicles.