期刊
JOURNAL OF VIBRATION AND CONTROL
卷 20, 期 9, 页码 1293-1300出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1077546313480547
关键词
Flow velocity; nonlinear energy sink; nonlinear targeted energy transfer; pipe conveying fluid
资金
- National Natural Science Foundation of China [11202140, 10702045, 11172010]
- Natural Science Foundation of Liaoning Province [201102170]
A passive and adaptive control method for stabilizing a pipe conveying fluid is presented. Owing to fluid-pipe interactions, pipes are subjected to excessive vibrations. Classical passive control methods are only valid for stabilizing the pipes over a narrow range of flow velocities. In this paper, the theory of nonlinear targeted energy transfer (TET) is applied to suppress the excessive vibration of a pipe by using an essentially nonlinear attachment, which is called a nonlinear energy sink (NES). Numerical evidence for a passive TET between the pipe and NES is proposed. Results show that the NES can robustly absorb and dissipate a major portion of the vibrational energy of the pipe.
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