Transversal vibration analysis of an axially moving string with unilateral constraints using the HHT method

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• 作者：Chunlin Xia ; Yangfang Wu ; Qianqian Lu
• 关键词：Unilateral constraint ; Hilbert&ndash ; Huang transform ; EMD/EEMD ; Data analysis ; Transversal vibration
• 刊名：Mechanical Systems and Signal Processing
• 出版年：2013
• 出版时间：August-September, 2013
• 年：2013
• 卷：39
• 期：1-2
• 页码：471-488
• 全文大小：10192 K

文摘

In this paper, the transversal vibration characteristics of an axially moving string with unilateral constraints were examined using the Hilbert-Huang transform (HHT), due to its wide range of applications. Experiments were conducted on five test cases, and the subsequent analyses were discussed. The experimental results show that the introduction of a guide has the effect of causing low-frequency vibration suppression. The vibration behaviors of the guided segment and the free portion are highly sensitive to the initial tension, the initial clearance between the string and the guide, the transport speed and the guiding length. The details of the string vibrations revealed in this work will be used as a reference for engineering designs and relative system identifications.