Temat: characteristic length - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Microstructural considerations on SH-wave propagation in a piezoelectric layered structure
Autorzy:: Goyal, R.
Kumar, S.
Powiązania:: https://bibliotekanauki.pl/articles/280348.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: SH-wave
piezoelectricity
couple stress
characteristic length
Opis:: Shear wave based acoustic devices are being used in gaseous and liquid environments because of their high-sensitivity. The theoretical study of horizontally polarized shear (SH) waves in a layered structure consisting of a piezoelectric ceramic of P ZT − 5H or BaT iO3 material overlying a couple stress substrate is presented in this paper. The considered substrate is supposed to be exhibiting microstructural properties. The closed form expression of dispersion relations are derived analytically for electrically open and short conditions. The effects of internal microstructures of the couple stress substrate, thickness of P ZT − 5H or BaT iO3 ceramic, piezoelectric and dielectric constants are illustrated graphically on the phase velocity of the piezoelectric layer under electrically open and short conditions.
Źródło:: Journal of Theoretical and Applied Mechanics; 2018, 56, 4; 993-1004
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Effects of liquid loadings on lamb waves in context of size dependent couple stress theory
Autorzy:: Sharma, V.
Kumar, S.
Powiązania:: https://bibliotekanauki.pl/articles/949331.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: couple stress
characteristic length
Lamb waves
elastic waves
liquid loadings
Opis:: For understanding the effects of an internal microstructure, generalised microcontinuum theories with additional microstructural parameters are developed. One such a parameter, called the characteristic length of the material comparable with the internal cell size of the material is involved in the couple stress theory. The problem of propagation of Lamb waves in a plate with an internal microstructure and loaded with an inviscid liquid on both sides is studied using the couple stress theory. The dispersion equation of Lamb waves with the liquid loadings is derived. The impact of the liquid loadings is studied on the propagation of Lamb waves. The effect of the characteristic length is also studied on the phase velocity of Lamb waves in the plate for various modes in the presence of liquid loadings.
Źródło:: Journal of Theoretical and Applied Mechanics; 2015, 53, 4; 925-934
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

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