Influence of axis misalignments in stepped planetary gear stages on the excitation behavior—test rig development and simulative analysis

Abstract One challenge in the design of automotive gearboxes is combination high power density, efficiency and low noise emission. With electrification powertrain, requirements terms emission increase additionally. Stepped planetary gear stages are a potential topology to solve current challenges gearbox technology. Current research shows pronounced misalignment behavior stages, especially with manufacturing or assembly deviations. However, effects dynamic on tooth contacts stepped have not been adequately investigated. This paper presents test rig that allows investigation excitation displacement taking into account adjustable axis misalignments. The shafts introduced eccentric bushings this concept. To evaluate transmission error displacements different components can be measured. modeled multibody simulation. contact using force module GearForce6D. varied simulation model influence evaluated. results show planet pin position errors highest sun trajectory load sharing. misalignments occurring due inclination skew shaft lead higher flank pressures an total error.