Preliminary Calculation of Bubble Dynamics in Cracking Sound Generation

Tetsuya Kanagawa^1, and Hisao Taira²

¹Department of Engineering Mechanics and Energy, University of Tsukuba, Tsukuba, Japan

²Department of Education, Hokkaido University of Education, Sapporo Campus, Sapporo, Japan

Cite this paper:
Tetsuya Kanagawa and Hisao Taira. Preliminary Calculation of Bubble Dynamics in Cracking Sound Generation. Biomedical Science and Engineering. 2015; 3(2):30-34. doi: 10.12691/bse-3-2-1

Abstract

Bending a human joint generates a sound. This paper theoretically tackles the cracking sound generated by the manipulation of human joint such as finger. The Rayleigh-Plesset equation in the classical bubble dynamics is applied to determine the nonlinear oscillations of bubble that generates sound. Comparing the numerical solutions of the Rayleigh-Plesset equation for two types of modeling, i.e., forced- and free-oscillator assumptions for inhomogeneous terms, gives clear difference.

Keywords:
cracking sound joint manipulation bubble dynamics bubble oscillation

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