Wave propagation in non-homogeneous asymmetric circular plate

Author(s):  
Weipeng Hu ◽  
Mengbo Xu ◽  
Ruisong Jiang ◽  
Chuanzeng Zhang ◽  
Zichen Deng
2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Wei Liu ◽  
Donghua Wang ◽  
Hanfeng Lu ◽  
Yumeng Cao ◽  
Pengrong Zhang

Radial vibration of the circular plate is presented using wave propagation approach and classical method containing Bessel solution and Hankel solution for calculating the natural frequency theoretically. In cylindrical coordinate system, in order to obtain natural frequency, propagation and reflection matrices are deduced at the boundaries of free-free, fixed-fixed, and fixed-free using wave propagation approach. Furthermore, radial phononic crystal is constructed by connecting two materials periodically for the analysis of band phenomenon. Also, Finite Element Simulation (FEM) is adopted to verify the theoretical results. Finally, the radial and piezoelectric effects on the band are also discussed.


2015 ◽  
Vol 118 (18) ◽  
pp. 184904 ◽  
Author(s):  
Haisheng Shu ◽  
Lei Zhao ◽  
Xiaona Shi ◽  
Wei Liu ◽  
Dongyan Shi ◽  
...  

Author(s):  
J. M. Galbraith ◽  
L. E. Murr ◽  
A. L. Stevens

Uniaxial compression tests and hydrostatic tests at pressures up to 27 kbars have been performed to determine operating slip systems in single crystal and polycrystal1ine beryllium. A recent study has been made of wave propagation in single crystal beryllium by shock loading to selectively activate various slip systems, and this has been followed by a study of wave propagation and spallation in textured, polycrystal1ine beryllium. An alteration in the X-ray diffraction pattern has been noted after shock loading, but this alteration has not yet been correlated with any structural change occurring during shock loading of polycrystal1ine beryllium.This study is being conducted in an effort to characterize the effects of shock loading on textured, polycrystal1ine beryllium. Samples were fabricated from a billet of Kawecki-Berylco hot pressed HP-10 beryllium.


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