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Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
Published on: September 26, 2014
Geometrically nonlinear dynamic model for a hexagonal lattice
A V Porubov1,2, A M Krivtsov1,2, I D Antonov1,2
1Institute for Problems in Mechanical Engineering, Bolshoy 61, V. O., Saint-Petersburg, Russia.
Abstract:
It is shown that angular stiffness in the hexagonal lattice model plays a significant role in the geometrical nonlinear terms in the equations of the continuum limit. A geometrically nonlinear discrete model is formulated for the hexagonal lattice by considering the interaction of two sublattices. An asymptotic procedure is developed in order to obtain the nonlinear coupled equations of motion in the continuum limit of the discrete model. An interaction of longitudinal and shear plane strain waves is studied by using the solutions of the obtained equations.
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