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Actual fatigue reliability of structural material: Vibration efficiency
Hussain, Muzamal,Khadimallah, Mohamed A.,Ayed, Hamdi,Alshoaibi, Adil,Loukil, Hassen,Alsoruji, Ghazi,Tounsi, Abdelouahed Techno-Press 2022 Advances in concrete construction Vol.13 No.4
This paper is concerned with the vibration analysis of middle layer cylindrical shell made of functionally graded material. The outer layers and inner layer are composed of functionally graded and isotropic material respectively. The Rayleigh Ritz method is applied to solve the presented shell dynamics equations. Two configurations are constructed with layers distributions. Fundamental natural frequencies of the three layered cylindrical shell is plotted against the circumferential wave number with different power law exponents. The frequency decreases with the increase of power law exponent. The fundamental natural frequencies first decreases and fall down to its minimum value, after frequencies increases with circumferential wave number. This is due to change in the magnitude of extensional and bending energies of the cylindrical shells. The computer software MATLAB has been employed for the computation of presented frequencies and tested the results obtained in order to assess the accuracy and validity of the cylindrical shell model for predicting the vibration frequencies of cylindrical shell.
Shooting method applied to porous rotating disk: Darcy-Forchheimer flow of nanofluid
Muzamal Hussain,Humaira Sharif,Mohamed A. Khadimallah,Abir Mouldi,Hassen Loukil,Mohamed R. Ali,Abdelouahed Tounsi Techno-Press 2023 Advances in nano research Vol.14 No.3
The characteristics of motile microorganism and three dimensional Darcy-Forchheimer nanofluid flow by a porous rotatable disk with heat generation/absorption is reported. Thermophoretic and Brownian motion aspects are included by utilizing Buongiorno model. Moreover, slip conditions are considered on velocity, thermal, concentration and microorganism. Shooting procedure is implemented to find the numerical results of physical quantities are evaluated parametrically. The different physical parameters like heat sink/source parameter, thermal, Brownian number, thermophoresis parameter, concentration, Peclet number, bioconvected Lewis number, microorganism on concentration and density of motile microorganism distributions is considered. Graphs of concentration and microorganism are plotted to examine the influence of distinct prominent flow parameters.
Elastic shell model: Effect of Young's Modulus on the vibration of double-walled CNTs
Hussain, Muzamal,Asghar, Sehar,Khadimallah, Mohamed Amine,Ayed, Hamdi,Banoqitah, Essam Mohammed,Loukil, Hassen,Ali, Imam,Mahmoud, S.R.,Tounsi, Abdelouahed Techno-Press 2022 Advances in concrete construction Vol.13 No.6
In this paper, vibrational attributes of double-walled carbon nanotubes (CNTs) has been studied based upon nonlocal elastic shell theory. The implication of small scale is being perceived by establishing nonlocal Love shell model. The wave propagation approach has been operated to frame the governing equations as eigen value system. The comparison of local and nonlocal model has been overtly explored by means of scaling parameter. An appropriate selection of material properties and nonlocal parameter has been considered. The influence of changing mechanical parameter Young's modulus has been studied in detail. The dominance of end condition via nonlocal parameter is explained graphically. The results generated furnish the evidence regarding applicability of nonlocal shell model and also verified by earlier published literature.