Experimental analysis of vibration confinement to enhance conventional active vibration control

William W. Clark; Zhengrong Zhu

doi:10.1117/12.310659

16 June 1998 Experimental analysis of vibration confinement to enhance conventional active vibration control

William W. Clark, Zhengrong Zhu

Proceedings Volume 3326, Smart Structures and Materials 1998: Industrial and Commercial Applications of Smart Structures Technologies; (1998) https://doi.org/10.1117/12.310659
Event: 5th Annual International Symposium on Smart Structures and Materials, 1998, San Diego, CA, United States

Abstract

This paper presents the result of an experimental study to investigate the potential advantages of using passive vibration confinement over conventional active vibration control methods, as well as to investigate the benefits of using the two methods simultaneously. The general approach is to compare the result of actively controlling vibrations in a beam which sees various degrees of modal confinement. Vibration confinement is carried out passively, and the comparison is based on control effort required as well as vibration control performance achieved. To date, there has been a significant amount of work in the area of vibration confinement, or mode localization, but the focus has been primarily either 1) that it is an interesting phenomenon which exists in structures or 2) that it can be produced in structures through active, passive, or hybrid means to achieve some end such as vibration control. This paper presents an experimental follow-up to an earlier numerical study which directly compared confinement techniques to conventional active vibration control methods, and showed how confinement can be used to enhance conventional vibration control. Although not as dramatic, the result presented in this paper clearly support that study and show that passive vibration confinement can enhance active control through both performance and energy consumption.

Citation Download Citation

William W. Clark and Zhengrong Zhu "Experimental analysis of vibration confinement to enhance conventional active vibration control", Proc. SPIE 3326, Smart Structures and Materials 1998: Industrial and Commercial Applications of Smart Structures Technologies, (16 June 1998); https://doi.org/10.1117/12.310659

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