National Natural Science Foundation of China(Grant Nos.51175370,51675368);Application of Basic Research and Frontier Technology Research Key Projects of Tianjin,China(Grant No.13JCZDJC34300);National Basic Research Program of China(973 Program,Grant No.2013CB035402)
Time?variant excitations in planetary gear trains can cause excessive noise and vibration and even damage the system on a permanent basis. This paper focuses on the elastic vibrations of a helical planetary ring gear ...