Imperfect bonding effect on dynamic response of a non-circular lined tunnel subjected to shear waves

2016 ◽  
Vol 56 ◽  
pp. 226-231 ◽  
Author(s):  
Xue-Qian Fang ◽  
He-Xin Jin ◽  
Jin-Xi Liu ◽  
Ming-Juan Huang
Keyword(s):  
Dynamic Response ◽  
Shear Waves ◽  
Imperfect Bonding ◽  
Bonding Effect

scholarly journals Wave polarization and dynamic degeneracy in a chiral elastic lattice

2019 ◽  
Vol 475 (2232) ◽  
pp. 20190313 ◽  
Author(s):  
G. Carta ◽  
I. S. Jones ◽  
N. V. Movchan ◽  
A. B. Movchan
Keyword(s):  
Dynamic Response ◽  
Shear Waves ◽  
Low Frequency ◽  
Elementary Cell ◽  
Periodic Lattice ◽  
Wave Polarization ◽  
Lattice Systems ◽  
Systematic Analysis ◽  
Practical Applications ◽  
Elastic Lattice

This paper addresses fundamental questions arising in the theory of Bloch–Floquet waves in chiral elastic lattice systems. This area has received a significant attention in the context of ‘topologically protected’ waveforms. Although practical applications of chiral elastic lattices are widely appreciated, especially in problems of controlling low-frequency vibrations, wave polarization and filtering, the fundamental questions of the relationship of these lattices to classical waveforms associated with longitudinal and shear waves retain a substantial scope for further development. The notion of chirality is introduced into the systematic analysis of dispersive elastic waves in a doubly-periodic lattice. Important quantitative characteristics of the dynamic response of the lattice, such as lattice flux and lattice circulation, are used in the analysis along with the novel concept of ‘vortex waveforms’ that characterize the dynamic response of the chiral system. We note that the continuum concepts of pressure and shear waves do not apply for waves in a lattice, especially in the case when the wavelength is comparable with the size of the elementary cell of the periodic structure. Special critical regimes are highlighted when vortex waveforms become dominant. Analytical findings are accompanied by illustrative numerical simulations.

scholarly journals Propagation of Floquet–Bloch shear waves in viscoelastic composites: analysis and comparison of interface/interphase models for imperfect bonding

2016 ◽  
Vol 228 (3) ◽  
pp. 1177-1196 ◽  
Author(s):  
Igor V. Andrianov ◽  
Vladyslav V. Danishevskyy ◽  
Heiko Topol ◽  
Graham A. Rogerson
Keyword(s):  
Shear Waves ◽  
Imperfect Bonding ◽  
Viscoelastic Composites
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