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K.S. Al-Basyouni,S.R. Mahmoud 국제구조공학회 2021 Structural Engineering and Mechanics, An Int'l Jou Vol.79 No.5
The present paper investigates the frequencies based on the radial vibrations of a non-homogeneous elastic cylinder using different boundary conditions (BCs) under the rotating, non-homogeneity, and magnetic field effects. Three different BCs, the free, mixed, and fixed, are implemented. The solution is related to using the eigenvalues based on the radial vibrations frequencies for different boundary conditions in harmonic vibrations. The numeric outcomes are demonstrated graphically for each case-the comparison of the results in the nonappearance and variation of the non-homogeneity, rotating effects, and magnetic field. The obtained outcomes specify the rotating, non-homogeneity, and magnetic field effects.
A system of several fraction laws for the identification of rotating response of FG shell
Yahya, Ahmad,Hussain, Muzamal,Khadimallah, Mohamed A.,Khedher, Khaled Mohamed,Al-Basyouni, K.S.,Ghandourah, Emad,Banoqitah, Essam Mohammed,Alshoaibi, Adil Techno-Press 2022 Advances in concrete construction Vol.13 No.3
The problem is formulated by applying the Kirchhoff's conception for shell theory. The longitudinal modal displacement functions are assessed by characteristic beam ones meet clamped-clamped end conditions applied at the shell edges. The fundamental natural frequency of rotating functionally graded cylindrical shells of different parameter versus ratios of length-to-diameter and height-to-diameter for a wide range has been reported and investigated through the study with fractions laws. The frequency first increases and gain maximum value with the increase of circumferential wave mode. By increasing different value of height-to-radius ratio, the resulting backward and forward frequencies increase and frequencies decrease on increasing height-to-radius ratio. Moreover, on increasing the rotating speed, the backward frequencies increases and forward frequencies decreases. The trigonometric frequencies are lower than that of exponential and polynomial frequencies. Stability of a cylindrical shell depends highly on these aspects of material. More the shell material sustains a load due to physical situations, the more the shell is stable. Any predicted fatigue due to burden of vibrations is evaded by estimating their dynamical aspects.
The investigation of Magnetohydrodynamic nanofluid flow with Arrhenius energy activation
Sharif, Humaira,Khadimallah, Mohamed A.,Naeem, Muhammad Nawaz,Hussain, Muzamal,Mahmoud, S.R.,Al-Basyouni, K.S.,Tounsi, Abdelouahed Techno-Press 2021 Advances in nano research Vol.10 No.5
In this article, an analytically and numerically 3D nanoliquid flow by a porous rotatable disk is presented in the presence of gyrotactic microorganisms. The mathematical model in the form of partial differential system is transmuted into dimensionless form by utilizing the appropriate transformation. The homotopy analysis approach is applied to attain the analytic solution of the problem. The effect of promising parameters on velocity distribution, temperature profile, nanoparticles volume fraction and motile microorganism distribution field are evaluated through graphs and in tabular form. The existence of Brownian motion and thermophoresis impacts are more proficient for heat transfer enhancement. Further the unique features like heat absorption/generation and energy activation are also examined for the present flow problem. The obtained results are compared with the earliear investigation to check the accuracy of present model.