On the estimation of dynamic mass density of random composites.
The dynamic effective mass density and bulk modulus of an inhomogeneous medium at low frequency limit are discussed. Random configurations in a variety of two-dimensional physical contexts are considered. In each case, effective dynamic mass density and bulk modulus are calculated based on eigenmode matching theory. The results agree with those provided by Martin et al. [J. Acoust. Soc. Am. 128, 571-577 (2010)] obtained from effective wavenumber method.
Field of Theoretical and Applied Mechanics, Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, New York 14853, USA. cj263@cornell.edu
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D000162:Acoustics / Q000295:instrumentation*; D055119:Elastic Modulus; D004867:Equipment Design; D008962:Models, Theoretical; D009038:Motion; D013016:Sound