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所属单位：能源与动力学院

发表刊物：ARCHIVE OF APPLIED MECHANICS

关键字：Transfer path analysis Virtual decoupling method Decoupling Frequency response function

摘要：An important procedure in transfer path analysis (TPA) is to measure the frequency response functions (FRFs) of the decoupled passive subsystem. The classical TPA method obtains the passive subsystem's FRFs by direct measuring when the system is disassembled. The main shortcoming of the classical method to measure the FRFs is that it is time-consuming due to the necessity to dismount the active part. In this paper, a novel method is proposed to estimate the passive subsystem' FRF matrix without disassembling the coupled mechanical structure. The key idea of this method is that the effect of a coupled subsystem will be canceled out if the links which connect this subsystem with the other one have no deformation, since the coupled systems influence each other only through the links which can be regarded as combinations of connecting springs and dampers. Following this idea, the expression of the passive subsystem's FRF matrix can be deduced from the entire system's FRF matrix directly. The proposed method in this paper is called the virtual decoupling method, since the decoupling is not 'real' but 'virtual'. Obviously, the actual decoupling procedure is avoided so that the shortcoming mentioned above is overcome. The method is validated by a numerical model and a finite element model.

ISSN号：0939-1533

是否译文：否

发表时间：2017-09-01

合写作者：Liao, Xuhui,Liao, Lianying,Meng, Haodong

通讯作者：李舜酩