Temat: ratios - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Study of axi-symmetric vibrations in a micropolar transversely isotropic layer
Autorzy:: Gupta, R. R.
Powiązania:: https://bibliotekanauki.pl/articles/947327.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: fala symetryczna
anizotropia
fala akustyczna
micropolar
transversely isotropic
amplitude ratios
Opis:: The present investigation deals with the propagation of circular crested Lamb waves in a homogeneous micropolar transversely isotropic medium. Secular equations for symmetric and skew-symmetric modes of wave propagation in completely separate terms are derived. The amplitudes of displacements and microrotation are computed numerically for magnesium as a material and the dispersion curves, amplitudes of displacements and microrotation for symmetric and skew-symmetric wave modes are presented graphically to evince the effect of anisotropy. Some special cases of interest are also deduced.
Źródło:: International Journal of Applied Mechanics and Engineering; 2019, 24, 2; 259-268
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Investigation of waves generated in transversely isotropic micropolar generalized thermoelastic half space under temperature dependent properties
Autorzy:: Gupta, R. R.
Powiązania:: https://bibliotekanauki.pl/articles/264335.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: propagacja fal
termoelastyczność
naprężenia
micropolar
transversely isotropic
generalized thermoelastic
amplitude ratios
Opis:: The present study deals with the propagation of waves in a transversely isotropic micropolar generalized thermoelastic material possessing temperature dependent elastic properties. After developing the solution for LS, GL and CT theory, the phase velocities and attenuation quality factor have been obtained. The expressions for amplitudes of stresses, displacements, microratation and temperature distribution have been derived and computed numerically. The numerically evaluated results have been plotted graphically. Some particular cases of interest have also been obtained.
Źródło:: International Journal of Applied Mechanics and Engineering; 2019, 24, 4; 53-65
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Influence of diffusion and impedence parameters on wave propagation in thermoelastic medium
Autorzy:: Kaushal, Sachin
Kumar, Rajneesh
Parmar, Kulwinder
Powiązania:: https://bibliotekanauki.pl/articles/2174177.pdf
Data publikacji:: 2021
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: fala płaska
dyfuzja
impedancja
plane wave
amplitude ratios
diffusion
impedance parameters
Opis:: The aim of the present paper is to study the impact of diffusion and impedance parameters on the propagation of plane waves in a thermoelastic medium for Green and Lindsay theory (G-L) and the Coupled theory (C-T) of thermoelasticity. Results are demonstrated for impedance boundary conditions and the amplitude ratios of various reflected waves against the angle of incidence are calculated numerically. The characteristics of diffusion, relaxation time and impedence parameter on amplitude ratios have been depicted graphically. Some cases of interest are also derived from the present investigation.
Źródło:: International Journal of Applied Mechanics and Engineering; 2021, 26, 4; 99--112
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Surface wave characteristics in a micropolar transversely isotropic halfspace underlying an inviscid liquid layer
Autorzy:: Gupta, R. R.
Powiązania:: https://bibliotekanauki.pl/articles/955310.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: fala Rayleigha
propagacji fal
liczba falowa
micropolar
transversely isotropic
amplitude ratios
Rayleigh waves
Opis:: The present investigation deals with the propagation of waves in a micropolar transversely isotropic half space with an overlying inviscid fluid layer. Effects of fluid loading and anisotropy on the phase velocity, attenuation coefficient, specific loss and relative frequency shift. Finally, a numerical solution was carried out for aluminium epoxy material and the computer simulated results for the phase velocity, attenuation coefficient, specific loss and relative frequency shift are presented graphically. A particular case for the propagation of Rayleigh waves in a micropolar transversely isotropic half-space is deduced and dispersion curves are plotted for the same as functions of the wave number. An amplitude of displacements and microrotation together with the path of surface particles are also calculated for the propagation of Rayleigh waves in the latter case.
Źródło:: International Journal of Applied Mechanics and Engineering; 2014, 19, 1; 49-60
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Wave propagation in a micropolar transversely isotropic generalized thermoelastic half-space
Autorzy:: Gupta, R. R.
Powiązania:: https://bibliotekanauki.pl/articles/955189.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: termosprężystość
prędkość fazowa
współczynnik tłumienia drgań sprężystych
micropolar
transversely isotropic
generalized thermoelastic
amplitude ratios
Opis:: Rayleigh waves in a half-space exhibiting microplar transversely isotropic generalized thermoelastic properties based on the Lord-Shulman (L-S), Green and Lindsay (G-L) and Coupled thermoelasticty (C-T) theories are discussed. The phase velocity and attenuation coefficient in the previous three different theories have been obtained. A comparison is carried out of the phase velocity, attenuation coefficient and specific loss as calculated from the different theories of generalized thermoelasticity along with the comparison of anisotropy. The amplitudes of displacements, microrotation, stresses and temperature distribution were also obtained. The results obtained and the conclusions drawn are discussed numerically and illustrated graphically. Relevant results of previous investigations are deduced as special cases.
Źródło:: International Journal of Applied Mechanics and Engineering; 2014, 19, 2; 247-257
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Graph models of automobile gears - kinematics
Autorzy:: Drewniak, J.
Kopeć, J.
Zawiślak, S.
Powiązania:: https://bibliotekanauki.pl/articles/955206.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: analiza kinematyczna
wskaźniki
przekładnia zębata
mechatronika samochodowa
kinematical analysis
ratios
mixed graphs
contour graphs
bond graphs
Opis:: In the present paper, kinematical analysis of an automotive gear is described. Versatile graph based methods have been utilized for this purpose. An application of mixed, contour and bond graphs gives the same results. It allows the detection of possible mistakes as well as a deeper insight into the designed artifact. The graphs can also be used for further analyses which will be published in a separate document.
Źródło:: International Journal of Applied Mechanics and Engineering; 2014, 19, 3; 563-573
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Reflection and transmission in non-local couple stress micropolar thermoelastic media
Autorzy:: Gupta, Deepa
Malik, Sangeeta
Kumar, Krishan
Sharma, Raj Kumar
Powiązania:: https://bibliotekanauki.pl/articles/2174196.pdf
Data publikacji:: 2022
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: termosprężystość
liczba falowa
para
non-local
thermoelastic solid
amplitude ratios
reflection
transmission
couple stress
wave number
Opis:: We have studied the problem of homogenous, isotropic non-local couple stress micropolar thermoelastic solid in the absence of body forces, couple density and heat resources. The reflection and transmission of waves at the interface of two distinct media have been investigated. It is observed that amplitude ratios of various reflected and transmitted waves are functions of wave number of incident waves and are affected by the non-local parameter of thermoelastic solid.
Źródło:: International Journal of Applied Mechanics and Engineering; 2022, 27, 2; 53--76
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Reflection and transmission at the boundary surface of modified couple stress thermoelastic media
Autorzy:: Kumar, R.
Kumar, K.
Powiązania:: https://bibliotekanauki.pl/articles/264443.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: termoelastyczność
fala podłużna
fala poprzeczna
wskaźniki amplitudy
modified couple stress thermoelastic solid
longitudinal wave
transverse wave
reflection
transmission
amplitude ratios
Opis:: In this paper the reflection and transmission at a plane interface in modified couple stress generalized thermoelastic solid half spaces in the context of Loard-Shulman (LS) and Green-Lindsay (GL) theories in welded contact are investigated. Amplitude ratios of various reflected and transmitted waves are obtained due to incidence of a set of coupled longitudinal waves and coupled transverse waves. It is found that the amplitude ratios of various reflected and transmitted waves are functions of the angle of incidence, frequency and are affected by the couple stress properties of the media. Some special cases are deduced from the present formulation.
Źródło:: International Journal of Applied Mechanics and Engineering; 2016, 21, 1; 61-81
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Response of non-linear shock absorbers-boundary value problem analysis
Autorzy:: Rahman, M. A.
Ahmed, U.
Uddin, M. S.
Powiązania:: https://bibliotekanauki.pl/articles/265424.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: amortyzator
tłumik drgań
stabilność
wartość graniczna
shock absorber
untuned vibration damper
frequency ratios
non-linear springs
non-linear dampers
stability
boundary value problem
multisegment method of integration
Opis:: A nonlinear boundary value problem of two degrees-of-freedom (DOF) untuned vibration damper systems using nonlinear springs and dampers has been numerically studied. As far as untuned damper is concerned, sixteen different combinations of linear and nonlinear springs and dampers have been comprehensively analyzed taking into account transient terms. For different cases, a comparative study is made for response versus time for different spring and damper types at three important frequency ratios: one at r = 1, one at r > 1 and one at r <1. The response of the system is changed because of the spring and damper nonlinearities; the change is different for different cases. Accordingly, an initially stable absorber may become unstable with time and vice versa. The analysis also shows that higher nonlinearity terms make the system more unstable. Numerical simulation includes transient vibrations. Although problems are much more complicated compared to those for a tuned absorber, a comparison of the results generated by the present numerical scheme with the exact one shows quite a reasonable agreement.
Źródło:: International Journal of Applied Mechanics and Engineering; 2013, 18, 3; 793-814
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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