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Wyszukujesz frazę "torsional waves" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Propagation of the torsional wave in an irregular self-reinforced composite material bounded between two half-spaces
Autorzy:
Gupta, Shishir
Das, Sandip Kumar
Powiązania:
https://bibliotekanauki.pl/articles/1839613.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
torsional waves
phase velocity
sandy layer
irregularity
initial stress
Opis:
This research article is concerned with the analytical assessment and mathematical modelling to unveil the characteristic of a torsional wave in the irregular Earth’s crustal stratum. This investigation has been performed to clarify of possible occurrence of the torsional wave in an irregular self-reinforced composite layer bonded between dry sandy media and an isotropic elastic half-space. Rectangular and parabolic irregularities have been assumed at the interface of the intermediate layer and the lower half-space. In order to acquire the required dispersion equation, the appropriate boundary conditions with the assistance of displacement and stress components have been well satisfied. The effects of different affecting parameters such as reinforcement, sandiness, initial stress and irregularity parameters have been explored and explained by suitable graphs. Moreover, a comparative study has also been accomplished graphically for rectangular, parabolic, and no irregularities.
Źródło:
Journal of Theoretical and Applied Mechanics; 2020, 58, 4; 971-982
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical modeling of torsional surface wave propagation in a non-homogeneous transverse isotropic elastic solid semi-infinite medium under a layer
Autorzy:
Sethi, M.
Sharma, A.
Vasishth, A.
Powiązania:
https://bibliotekanauki.pl/articles/265089.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
non-homogeneous media
torsional surface waves
rigidity
fala powierzchniowa
propagacja fal
modelowanie matematyczne
Opis:
The present paper deals with the mathematical modeling of the propagation of torsional surface waves in a non-homogeneous transverse isotropic elastic half-space under a rigid layer. Both rigidities and density of the half-space are assumed to vary inversely linearly with depth. Separation of variable method has been used to get the analytical solutions for the dispersion equation of the torsional surface waves. Also, the effects of nonhomogeneities on the phase velocity of torsional surface waves have been shown graphically. Also, dispersion equations have been derived for some particular cases, which are in complete agreement with some classical results.
Źródło:
International Journal of Applied Mechanics and Engineering; 2017, 22, 2; 415-426
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Propagation of torsional surface waves in a nonhomogeneous half-space with circular irregularity in free surface
Autorzy:
Sethi, M.
Sharma, A. K.
Sharma, A.
Powiązania:
https://bibliotekanauki.pl/articles/266151.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
propagacja fal
dyspersja
prędkość fali
non-homogeneous media
torsional waves
rigidity
irregularity
Opis:
The present paper studies the effect of circular regularity on propagation of torsional surface waves in an elastic non-homogeneous half-space. Both rigidity and density of the half-space are assumed to vary inversely linearly with depth. Separation of variable method has been used to get the analytical solutions for the dispersion equation of the torsional surface waves. Also, the effects of non-homogeneity and irregularity on the phase velocity of torsional surface waves have shown graphically.
Źródło:
International Journal of Applied Mechanics and Engineering; 2018, 23, 4; 929-939
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the study of ion cyclotron waves in a cylindrical magnetized plasma
Autorzy:
Zaki, N. G.
Powiązania:
https://bibliotekanauki.pl/articles/146676.pdf
Data publikacji:
2011
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
electrostatic ion cyclotron (EIC) waves
cylindrical magnetized plasma
ion acoustic wave
torsional and compressional Alfvén waves
Opis:
In this work, a general dispersion relation of waves in the region of ion cyclotron frequency in the cylindrical magnetized plasma is derived. The waves are assumed to be cylindrically symmetric oscillations of small amplitude. Analytical calculations are performed to find the plasma dielectric tensor for the plasma consisting of hot electron and multi-component cold ions fluid. The special case of a three component plasma with hot electrons in a strong magnetic field may be interesting, e.g., in the context of fusion plasma containing D+, T+ and He2+. The general dispersion relation is simplified in two solutions. Firstly, E1 wave (E2 = 0) which has an electrostatic character, and secondly E2 wave (E1 = 0) which has an electromagnetic character. The dispersion relations for both waves are described and identified as the ion acoustic and electrostatic ion cyclotron (EIC) waves for E1 wave and the torsional Alfvén, i.e. ion cyclotron (IC) waves and the compressional Alfvén wave for E2 wave. These waves are studied due to their importance in the heating of plasmas.
Źródło:
Nukleonika; 2011, 56, 2; 179-184
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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