Author
A. M. Abd-Alla
Other affiliations: South Valley University, Taif University
Bio: A. M. Abd-Alla is an academic researcher from Sohag University. The author has contributed to research in topics: Magnetic field & Orthotropic material. The author has an hindex of 28, co-authored 71 publications receiving 1745 citations. Previous affiliations of A. M. Abd-Alla include South Valley University & Taif University.
Papers published on a yearly basis
Papers
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TL;DR: In this article, the effects of both rotation and magnetic field of a micropolar fluid through a porous medium induced by sinusoidal peristaltic waves traveling down the channel walls are studied analytically and computed numerically.
80 citations
TL;DR: In this article, the radial deformation and the corresponding stresses in a non-homogeneous hollow elastic cylinder rotating about its axis with a constant angular velocity are investigated, and the results indicate that the effect of inhomogeneity is very pronounced.
Abstract: In this paper the radial deformation and the corresponding stresses in a non-homogeneous hollow elastic cylinder rotating about its axis with a constant angular velocity is investigated. The material of the cylinder is assumed to the non-homogeneous and cylindrically orthotropic. The system of fundamental equations is solved by means of a finite difference method and the numerical calculations are carried out for the temperature, the components of displacement and the components of stress with the time t and through the thickness of the cylinder. The results indicate that the effect of inhomogeneity is very pronounced.
74 citations
TL;DR: In this paper, a model of generalized magneto-thermoelastic for orthotropic hollow cylinders whose surfaces are subjected to a thermal relaxation under the effect of rotation with one relaxation time was proposed.
Abstract: In this paper, we proposed a model of generalized magneto-thermoelastic for orthotropic hollow cylinder whose surfaces are subjected to a thermal relaxation under the effect of rotation with one relaxation time. The system of fundamental equations is solved by using an implicit finite-difference scheme. A numerical method is used to calculate the temperature, displacement and the components of stresses with time and through the radial of the cylinder. Numerical results are given and illustrated graphically for each case considered. The results indicate that the effect of rotation, inhomogeneity and magnetic field are very pronounced. Comparison made with the results predicted by the theory of generalized magneto-thermoelasticity with one relaxation time in the absence of rotation.
74 citations
TL;DR: In this paper, the peristaltic flow of Jeffrey fluid in an asymmetric rotating channel is studied and the effect of the Hartmann number, the ratio of relaxation to retardation times, time-mean flow, rotation and the phase angle on the pressure gradient, pressure rise, streamline, axial velocity and shear stress are discussed in detail and shown graphically.
73 citations
TL;DR: It has been shown that the velocity of Love waves lies between two quantities which are dependent on the non-homogeneities of two media and when the medium is isotropic and the initial stress is absent, the dispersion equation obtained is in agreement with the corresponding results.
71 citations
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TL;DR: Sokolnikoff's book as discussed by the authors differs greatly from Southwell, Timoshenko, and Love in spirit and content, and is symptomatic of the change in outlook of American mathematics over the past few decades.
Abstract: THE appearance of a treatise in English upon the mathematical theory of elasticity is an event the potential importance of which may be judged by the that the author, in his frequent suggestions for collateral reading, refers to only three such, those of Southwell, Timoshenko, and Love. In spirit and content Sokolnikoff}s book differs greatly from each and all of these. It may be described by a possible sub-title: “A pure mathematician surveys topics related to certain problems in the mathematical theory of elasticity”. It is symptomatic of the change in outlook of American mathematics over the past few decades. Mathematical Theory Of Elasticity Prof. I. S. Sokolnikoff with the collaboration of Asst. Prof. R. D. Speche. Pp. xi + 373. (New York and London: McGraw-Hill Book Co., Inc., 1946.) 22s. 6d.
552 citations
SIDI1
TL;DR: In this paper, a new five-variable refined plate theory for the free vibration analysis of functionally graded sandwich plates is developed, which accounts for hyperbolic distribution of the transverse shear strains, and satisfies the zero traction boundary conditions on the surfaces of the plate without using a shear correction factor.
Abstract: In this article, a new five-variable refined plate theory for the free vibration analysis of functionally graded sandwich plates is developed. By dividing the transverse displacement into bending, shear, and thickness stretching parts, the number of unknowns and governing equations of the present theory is reduced, and hence, makes it simple to use. Indeed, the number of unknown functions involved in the present theory is only five, as opposed to six or more in the case of other shear and normal deformation theories. The theory accounts for hyperbolic distribution of the transverse shear strains, and satisfies the zero traction boundary conditions on the surfaces of the plate without using a shear correction factor. Two common types of functionally graded material (FGM) sandwich plates, namely, the sandwich with FGM facesheet and homogeneous core and the sandwich with homogeneous facesheet and FGM core, are considered. The equations of motion are obtained using Hamilton's principle. Numerical resu...
261 citations
TL;DR: An Introduction to the Theory of Seismology by Prof K E Bullen Pp xiv + 276 (Cambridge: At the University Press, 1947) 18s net as discussed by the authors.
Abstract: IN view of the number of different lines of approach, a borderline subject is apt to amass a vast literature, some of it difficult of access to investigators This is particularly true of seismology ; the phenomena of earthquakes have attracted the attention of many famous geologists, and the recording of earthquake tremors involves the methods of experimental physics, while the interpretation of the records of earthquakes has provided a great stimulus to the development of the theory of the propagation of disturbances in elastic media and has ultimately thrown considerable light on the composition of the interior of the earth Many books have been written on seismology in its various aspects, but many of the most interesting modern geophysical developments have hitherto been available only in the original papers It is therefore of considerable interest to read the elegant exposition that Prof K E Bullen has presented in the book under review An Introduction to the Theory of Seismology By Prof K E Bullen Pp xiv + 276 (Cambridge: At the University Press, 1947) 18s net
210 citations
TL;DR: In this article, the two dimensional MHD flow of Eyring-Powell fluid model towards a stretching sheet was examined and it was found that the increase in the intensity of the magnetic field as well as Eyring and Powell fluid parameter γ shows resistance to the flow.
197 citations
TL;DR: In this paper, simultaneous effects of coagulation (blood clot) and variable magnetic field on peristaltically induced motion of non-Newtonian nanofluid containing gyrotactic microorganism through an annulus have been studied.
182 citations