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论文类型：期刊论文

发表时间：2015-09-01

发表刊物：JOURNAL OF VIBROENGINEERING

收录刊物：SCIE、EI、Scopus

卷号：17

期号：6

页面范围：3133-3146

ISSN号：1392-8716

关键字：multi-stage planetary gears; coupled modes; parameter sensitivity; rotational model

摘要：This paper proposes a method of analyzing distinct modal characteristics to obtain accurate sensitivity of natural frequencies and coupled modes to system parameters of multi-stage planetary gears. A purely rotational dynamic model of multi-stage planetary gear system with general descriptions is established based on the lumped mass method. The vibration modes of multi-stage planetary gears are classified into overall and planet modes with unique properties. According to the modal energy distributions in multi-stage planetary gears, the natural frequencies are clustered by each dominant vibration stage. The modal properties of each cluster in the multi-stage planetary system are similar to the single-stage planetary gear system established by the associated dominant vibration stage. It is shown that, variation of gear parameters in one planet stage mainly affects the natural frequencies in the cluster associated with the same stage, while the coupling shaft parameters significantly impact the natural frequencies corresponding to the planet stage which contains the connected sun gear.