Powerflow transfer ratio of vibration path systems in frequency range

Based on the theory of powerflow and the generalized probabilistic perturbation method,this paper studied the path powerflow transfer probability of multiple sources exciting floating raft system in frequency range;and,the new concept and effective approach of path powerflow transfer ratio for vibration transfer path systems in frequency range were presented.The powerflow transfer ratio among multiple and/or multi-dimensional paths was described correctly and expressly in frequency range when uncertain factors were considered.