%0 Journal Article
	%A M. Sasajima and  T. Yamaguchi and  M. Watanabe and  Y. Koike
	%D 2015
	%J International Journal of Mechanical and Mechatronics Engineering
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 105, 2015
	%T FEM Analysis of Occluded Ear Simulator with Narrow Slit Pathway
	%U https://publications.waset.org/pdf/10002240
	%V 105
	%X This paper discusses the propagation of sound waves in
air, specifically in narrow rectangular pathways of an occluded-ear
simulator for acoustic measurements. In narrow pathways, both the
speed of sound and the phase of the sound waves are affected by the
damping of the air viscosity. Herein, we propose a new finite-element
method (FEM) that considers the effects of the air viscosity. The
method was developed as an extension of existing FEMs for porous,
sound-absorbing materials. The results of a numerical calculation for a
three-dimensional ear-simulator model using the proposed FEM were
validated by comparing with theoretical lumped-parameter modeling
analysis and standard values.
	%P 1609 - 1612