An approach to calculate subsystems' frequency response functions in transfer path analysis

被引：0
|
作者：
Liao X.-H. [1 ,2 ]
Li S.-M. [1 ]
Meng H.-D. [2 ]
Wang Y. [3 ]
Liao L.-Y. [2 ]
机构：
[1] College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing
[2] School of Mechanical and Vehicle Engineering, Changzhou Institute of Technology, Changzhou
[3] Automotive Engineering Research Institute, Jiangsu University, Zhenjiang
来源：
Zhendong Gongcheng Xuebao/Journal of Vibration Engineering | 2018年 / 31卷 / 04期
关键词：
Decoupling; Frequency response function; Subsystem; Transfer path analysis;
D O I：
10.16385/j.cnki.issn.1004-4523.2018.04.016
中图分类号：
学科分类号：
摘要：
Transfer path analysis(TPA) is a widely used and effective method in the field of vibration and noise control. In TPA, vibrational systems are divided into the active part, passive part and some transfer paths through which the active and passive parts are connected. In TPA, it is necessary to measure the frequency response functions(FRFS) of the passive part. In classical TPA, the substructure needs to be disassembled firstly and then the frequency response function is measured. Therefore, the test process is very cumbersome. In this paper, a novel method is proposed to calculate the FRFs of the subsystem. The formulation of the FRF matrix of the subsystem is derived from the FRF matrix of the whole system directly. Obviously, the proposed method does not require the physical decoupling of subsystems. Consequently, the time required to measure the frequency response function of the subsystem is greatly shorten. The correctness and effectiveness of this method are validated by a numerical case and an experimental case. © 2018, Nanjing Univ. of Aeronautics an Astronautics. All right reserved.
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页码：681 / 687
页数：6
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