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A Finite Difference Approach To Study The Impact Of Boundary Conditions On The Acoustical Behavior Of Particle Stacks, Zhuang Mo, Guochenhao Song, Tongyang Shi, J Stuart Bolton

Publications of the Ray W. Herrick Laboratories

The responses of particle stacks to incident sound waves show interesting features that are very different from those of a homogeneous continuum. Further studies of the acoustical performance of particle stacks can help both to discover potential noise control applications of these types of materials, and to help provide better insight into the internal status of the particle stacks. In the current study, a finite difference (FD) model for a particle stack was built based on the Biot poro-elastic theory. The intention in developing this model is to describe the acoustical behavior of particle stacks with consideration of not only …