THE INFLUENCE OF VISCOSITY ON THE BAND GAP OF 2D PHONONIC CRYSTAL
The influence of the viscosity of host material on the band gap of 2D phononiccrystal is studied in this paper.The standard solid model is used to simulate theviscoelastic behavior of the host material and the fillers embedded in the host materialare still assumed elastic material.The elastic wave propagation problem in 2Dphononic crystal leads to an eignvalue problem by using the plane wave extensionmethod.An iterative algorithm is designed to obtain the eignvalue due to thedependence of elastic constants on the frequency.A numerical example is given forsteel/epoxy phononic crystal.The band gap of 2D phononic crystal (steel/epoxy) isevaluated for various viscosity constants,namely,relax time,initial and final stateelastic constants.It is found that the viscosity of host material can affect not only thelocation but also the extent of the band gap.
Phononic crystal band gap viscosity elastic wave standard solid model
Y.P.Zhao P.J.Wei Z.Q.Zhan M.Zheng
Department of Mathematics and Mechanics,School of Applied Sciences,University of Science and Technology Beijing,Beijing 100083
国际会议
第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)
安徽黄山
英文
883-887
2008-06-03（万方平台首次上网日期，不代表论文的发表时间）