Investigation on high-order harmonic generation of guided waves using local computation approaches: Theory and comparison with analytical modelling

Rafal Radecki, Michael J. Leamy, Tadeusz Uhl, Wieslaw J. Staszewski, Zhongqing Su, Li Cheng, Pawel Packo

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

3 Citations (Scopus)

Abstract

The paper presents numerical modelling approaches for computing wave propagation and high-order harmonic generation in nonlinear media. This approach is based on two local computational methods, i.e. the Local Interaction Simulation Approach and the Cellular Automata for Elastodynamics. Discretized numerical dispersion curves are calculated and used for the entire analysis. A quantitative study of velocity matching between the fundamental and high-order harmonic waves is performed. The influence of propagation distance on the magnitude of high-order harmonics is evaluated for various excitation frequencies. Numerical analyses show divergence from analytical models for dispersion curves, especially for high-order harmonics. These preliminary investigations demonstrate that the numerical modelling approaches applied can be used effectively for nonlinear wavefield analysis; however, numerical instead of analytical spectral characteristics should be considered.
Original languageEnglish
Title of host publication7th European Workshop on Structural Health Monitoring, EWSHM 2014 - 2nd European Conference of the Prognostics and Health Management (PHM) Society
PublisherINRIA
Pages575-582
Number of pages8
Publication statusPublished - 1 Jan 2014
Event7th European Workshop on Structural Health Monitoring, EWSHM 2014 - Nantes, France
Duration: 8 Jul 201411 Jul 2014

Conference

Conference7th European Workshop on Structural Health Monitoring, EWSHM 2014
Country/TerritoryFrance
CityNantes
Period8/07/1411/07/14

Keywords

  • Cellular Automata
  • Guided elastic waves
  • LISA
  • Modelling
  • Nonlinear wavefield
  • Numerical simulations

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality
  • Building and Construction
  • Computer Science Applications

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