Compressional wave features propagating in a two dimensional domain with randomly imperfect material density

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Compressional wave features propagating in a two dimensional domain with randomly imperfect material density

Popis výsledku v původním jazyce

The paper deals with radial compressional wave propagation in 2D continuum, the density of which is a continuous random function of (x, y) coordinates. This concept refers materials with microscopic non-homogeneity. Many papers appeared dealing with similar problem in a semi-infinite bar (1D) using spectral decomposition or Fokker-Planck equation analysis. Harmonic excitation acts in the origin. Material density is considered as a sum of a constant mean value and Gaussian, homogeneous and ergodic fluctuations in the plane (x, y). The correlation function is approximated as exponential being dependent on the distance of two points only. Derived spectral density in polar coordinates reads then in irrational and Bessel functions. The governing integro-dierential system for unknown stochastic parameters of waves propagating from the origin is then investigated. There has been shown a steep drop of the response deterministic part in radial direction with the increasing distance from the poi

Název v anglickém jazyce

Compressional wave features propagating in a two dimensional domain with randomly imperfect material density

Popis výsledku anglicky

The paper deals with radial compressional wave propagation in 2D continuum, the density of which is a continuous random function of (x, y) coordinates. This concept refers materials with microscopic non-homogeneity. Many papers appeared dealing with similar problem in a semi-infinite bar (1D) using spectral decomposition or Fokker-Planck equation analysis. Harmonic excitation acts in the origin. Material density is considered as a sum of a constant mean value and Gaussian, homogeneous and ergodic fluctuations in the plane (x, y). The correlation function is approximated as exponential being dependent on the distance of two points only. Derived spectral density in polar coordinates reads then in irrational and Bessel functions. The governing integro-dierential system for unknown stochastic parameters of waves propagating from the origin is then investigated. There has been shown a steep drop of the response deterministic part in radial direction with the increasing distance from the poi

Druh

D - Stať ve sborníku

CEP obor

JM - Inženýrské stavitelství

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

RASD 2013, Recent advances in structural dynamics

ISBN

9780854329649

ISSN

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e-ISSN

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Počet stran výsledku

14

Strana od-do

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Název nakladatele

University of Southampton, University of Pisa

Místo vydání

Pisa

Místo konání akce

Pisa

Datum konání akce

1. 7. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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