A complete procedure for the whining noise computation of a planetary gear set induced by the multi-mesh excitations is presented. This procedure is divided into three main steps. First, the parametrical internal excitations are simultaneously characterized by considering all contacts at the multiple gear meshes. Secondly, a finite element model of the planetary gear set is built. Finally, the coupled equations of motion are projected onto the modal basis and the stationary dynamic response is computed using an iterative spectral method.
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