期刊
JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME
卷 143, 期 2, 页码 -出版社
ASME
DOI: 10.1115/1.4048391
关键词
cable-harnessed structures; Kelvin-Voigt damping; hysteretic damping; modal analysis; modal testing; dynamics
资金
- Natural Sciences and Engineering Research Council of Canada [NSERC-DG 341472-2009]
This technical brief presents the experimental study and model validations for the damping mechanisms of cable-harnessed beam structures. The experimental and model results show very good agreements in predicting the structural damping induced by the cables.
In this technical brief, the experimental study and model validations for the damping mechanisms of cable-harnessed beam structures are presented. The structure consists of cables wrapped around a host beam in a periodic zigzag pattern. A special case of cable attached along the beam length over its centerline is also considered. First, material damping in the cables is characterized using dynamic tests and the relevant cable damping factors are calculated for both the Kelvin-Voigt and hysteretic damping models. Experimental modal testing is then performed on the fabricated cable-harnessed beams to obtain the frequency response functions (FRFs). Finally, the experimental FRFs are compared with the damped analytical models. The test and model results are shown to be in very good agreements in predicting the structural damping induced by the cables.
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