Interaction Between the Torsional Vibration of a Circular Rod and an Adjacent Viscous Fluid

[+] Author and Article Information
Jin O. Kim, Han Yong Chun

Department of Mechanical Engineering, Soongsil University, 1 Sangdo-dong, Dongjak-gu, Seoul 156-743, Korea

J. Vib. Acoust 125(1), 39-45 (Jan 06, 2003) (7 pages) doi:10.1115/1.1525004 History: Received September 01, 2001; Revised September 01, 2002; Online January 06, 2003
Copyright © 2003 by ASME
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Kim,  J. O., Wang,  Y., and Bau,  H. H., 1991, “The Effect of an Adjacent Viscous Fluid on the Transmission of Torsional Stress Waves in a Submerged Waveguide,” J. Acoust. Soc. Am., 89(3), pp. 1414–1422.
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Schematic diagram of a circular rod submerged in a viscous fluid and excited by a torsional vibrator
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Nondimensional mechanical impedances obtained from the exact (symbols) and approximate (solid lines) solutions
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Mechanical impedance calculated for the frequency ωθ=2π×(13.5×103 Hz) and depicted as a function of (ρf⋅μ)1/2
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Ratio of the torques at the end surface (Te) and the circumferential surface (Tc) of a rod depicted as a function of the length/radius ratio l for ρ=0.1 and various R
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Experimental apparatus including a torsional vibrator and a circular rod submerged in a viscous fluid
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Impedance curve of the transducer-rod system measured as a function of the frequency
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Electrical impedance measured at the frequency ωθ=2π×(12.1×103 Hz) and depicted as a function of (ρf⋅μ)1/2
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Electrical impedance measured at the frequency ωθ=2π×(13.5×103 Hz) and depicted as a function of (ρf⋅μ)1/2



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