Mousa Khalifa

• South Vally University, Luxor , Qena , Egypt

The objective of this paper is to study the elastic buckling characteristics of an axially loaded cylindrical shell of a three lobed cross section of variable thickness subjected to combined compression and bending loads based on the thin-shell theory and using the computational transfer matrix method. Modal displacements of the shell can be descri...

This paper is aimed to investigate how the corrugation parameters and the Winkler foundation affect the buckling behavior of isotropic and orthotropic thin-elliptic cylindrical shells with cosine-shaped meridian subjected to radial loads. The buckling three-dimensional equations of the shell are amended by including the Winkler foundation modulus b...

Based on the framework of Flügge's shell theory, transfer matrix approach and Romberg integration method, this paper investigates how corrugation parameters and material homogeneity affect the vibration behavior of isotropic and orthotropic oval cylindrical shells with sine-shaped hoop. Assume that the Young's moduli, shear moduli and density of th...

Based on the framework of Flügge's shell theory, transfer matrix approach and Romberg integration method, we investigated how the thermal gradient affects the vibration behavior of rotating isotropic and orthotropic oval cylindrical shells. The governing equations of orthotropic oval cylindrical shells, under parabolically varying thermal gradient...

For the first time, a new cross-section profile and efficient method are developed for the vibration analysis of isotropic and orthotropic cylindrical shells having circumferentially varying profile of a cardioid cross-section expressed as an arbitrary function, under thermal gradient effect. The governing equations of orthotropic cylindrical shell...

Flügge's shell theory and solution for the vibration analysis of a non-homogeneous orthotropic elliptical cylindrical shell resting on a non-uniform Winkler foundation are presented. The theoretical analysis of the governing equations of the shell is formulated to overcome the mathematical difficulties of mode coupling of variable curvature and hom...

In this paper, based on the framework of the Flügge's shell theory, the transfer matrix approach and the Romberg integration method, the vibration behavior of an elastic oval cylindrical shell with parabolically varying thickness along of its circumference resting on the Winkler-Pasternak foundations is investigated. The theoretical analysis of the...

In this paper, Flügge’s shell theory and solution for the vibration analysis of an inhomogeneous, orthotropic cylindrical shell resting on a circumferentially stepped Winkler foundation are carried out. The stepwise foundation consists of two regions having different stiffnesses and both regions are symmetric about the centrelines of the shell. The...

In this paper, the framework of the Flügge's shell theory, the transfer matrix approach and the Romberg integration method has been employed to investigate the buckling analysis of radial loaded oval cylindrical shell with parabolically varying thickness along of its circumference. Trigonometric functions are used to form the modal displacements of...

According to the framework of the Flügge’s shell theory, the Winkler and Pasternak foundations model, the transfer matrix approach and the Romberg integration method, the vibration behavior of an isotropic and orthotropic cylindrical shell with variable thickness is investigated. The governing equations of the shell based on the Pasternak foundatio...

Based on the thin-shell theory and using the computational transfer matrix approach and the Romberg integration method, the free vibration and elastic buckling behaviors of a cylindrical shell with a four lobed cross section of circumferential variable thickness subjected to axially compressive loads is presented. Modal displacements of the shell c...

A new vibration behavior is presented for an elastic oval cylindrical shell having circumferentially variable thickness with complex radius of curvature of an isotropic and orthotropic material. Based on the framework of the Flügge’s shell theory, the transfer matrix approach and the Romberg integration method, the governing equations of motion tha...

Based on the framework of the Flügge's shell theory, the transfer matrix approach and the Romberg integration method, this paper presents the vibration behavior of an isotropic and orthotropic oval cylindrical shell with parabolically varying thickness along its circumference. The governing equations of motion of the shell, which have variable coef...

The transfer matrix approach is used and the Flügge’s shell theory is modeled to investigate the free vibration behaviour of a cylindrical shell with a four-lobed cross-section with reduced thickness over part of its circumference. Modal displacements of the shell can be described by trigonometric functions and Fourier’s approach is used to separat...

On the basis of the thin-shell theory and on the use of the transfer matrix approach, this paper presents the vi-brational response and buckling analysis of three-lobed cross-section cylindrical shells, with circumferen-tially varying thickness, subjected to uniform axial membrane loads. A Fourier approach is used to separate the variables, and the...

The static buckling of a cylindrical shell of a four-lobed cross section of variable thickness subjected to non-uniform circumferentially compressive loads is investigated based on the thin-shell theory. Modal displacements of the shell can be described by trigonometric functions, and Fourier's approach is used to separate the variables. The govern...