Abstract: The vibration modal properties of doublehelical planetary gear (DHPG) system with threedimensional motion are investigated with a combined use of numerical and analytical approach in this paper. The lumpedparameter model ...

Abstract: The effect of mesh stiffness on the dynamic response of face gear transmission system combining with backlash nonlinearity is studied. First, a nonlinear timevarying (NLTV) and a nonlinear timeinvariant (NLTI) dynamic ...

Abstract: A concentric face gear torque split system used in the helicopter main transmission to transfer more power and reduce the structure weight is introduced. A mathematical model is proposed to analyze the vibration characteristics ...