DOI: https://doi.org/10.26089/NumMet.v16r231

Analysis of resonant excitation of layered and block media on the basis of discrete models

Authors

  • V.M. Sadovskii
  • E.P. Chentsov

Keywords:

microstructure
elasticity
resonance
discrete chain
moment continuum
block medium
rotational motion

Abstract

Resonant processes in structurally inhomogeneous materials of layered and block microstructure are studied in the framework of discrete models. Natural frequencies of longitudinal motion in a linear monatomic chain modeling a layered medium are determined for various boundary conditions. In order to analyze the behavior of the chain near resonant frequencies, the spectral portraits of the corresponding matrices are specified. It is shown that a special resonant frequency of rotational motion is observed when passing to the limit from a model of a monatomic chain with elastic connections to a moment continuum model. The particle rotation resistance is taken into account in this passage to the limit. This special resonant frequency does not depend on the chain length.

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Published

2015-06-13

Issue

Vol. 16 (2015): Issue 2.

Section

Section 1. Numerical methods and applications

Author Biographies

V.M. Sadovskii

Institute of Computational Modeling of SB RAS (ICM SB RAS)
• Deputy Director

E.P. Chentsov

Institute of Computational Modeling of SB RAS (ICM SB RAS)
• PhD Student

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