Investigation of Structure‐Borne Active Vibration Dampers
作者:
T. H. Rockwell,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1965)
卷期:
Volume 38,
issue 4
页码: 623-628
ISSN:0001-4966
年代: 1965
DOI:10.1121/1.1909762
出版商: Acoustical Society of America
数据来源: AIP
摘要:
The use of active feedback elements to produce damping of multiresonant structures has been extended to include the case in which the damping‐force generator is supported by the structure being damped. A theoretical damping equation is developed and experimental verification is obtained for the particular case of a uniform aluminum beam damped at its midpoint. In this structure‐borne configuration, the active damper is potentially applicable to a wider variety of vibration problems because external support for the damping‐force generator is no longer necessary. When applied to the uniform beam, an experimental structure‐borne damper demonstrated damping bandwidth in excess of 10 kc/sec and equivalent loss factors of up to 0.22 for resonant frequencies below 2 kc/sec.
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