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Continuum Mechanics and Thermodynamics

, Volume 31, Issue 6, pp 1627–1644 | Cite as

Dynamical properties of a composite microcracked bar based on a generalized continuum formulation

  • Valeria Settimi
  • Patrizia TrovalusciEmail author
  • Giuseppe Rega
Original Article

Abstract

The dynamical behavior of a mono-dimensional bar with distributed microcracks is addressed in terms of free and forced wave propagation. The multiscale model, derived from a generalized continuum formulation, accounts for the microstructure by means of a microdisplacement variable, added to the standard macrodisplacement, and of internal parameters representing density and length of microcracks. The influence of coupling between micro- and macrodisplacement overall response on the system is discussed, as well as the effect of the damage parameters on the propagating waves.

Keywords

Multiscale-multifield models Microcracked media Wave propagation Dispersion features 

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Notes

Acknowledgements

This research was supported by the Italian Ministry of University and Research, P.R.I.N. 2015, Project 2015JW9NJT Advanced mechanical modeling of new materials and structures for the solution of 2020 Horizon challenges, Sapienza Research Unit (Grant B86J16002300001), and by Sapienza University, Grant 2016 (B82F16005920005).

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Valeria Settimi
    • 1
  • Patrizia Trovalusci
    • 1
    Email author
  • Giuseppe Rega
    • 1
  1. 1.Dipartimento di Ingegneria Strutturale e GeotecnicaUniversità degli Studi di Roma La SapienzaRomeItaly

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