Abstract
Damping parameters for a gear system is difficult to measure directly because its excitation force with gear meshing can't be measured. This paper introduces an experimental identification method of damping coefficients of 3DOF vibration model for a power transmitting gear system as a basis of multi DOF vibration analysis. In the proposed method, modal analysis is performed with measured vibration response and we can obtain 3DOF damping coefficients, meshing part damping coefficient and transverse coefficients of driving and driven gear shaft, without any trial and error process. And the analyzed damping coefficients are verified experimentally with a gear test rig in which the damping effect can be change.
