Fatigue Life Assessment of Composite Airplane Wing Subjected to Variable Mechanical and Thermal Loads

A. Ebadi; Ehsan Selahi

Volume 11, Issue 2 , October 2017, Pages 1-11

  The purpose of this paper is to estimate the fatigue life of an airplane wing with laminated composite skin, subjected to variable mechanical and thermal loads. To achieve this aim,at first, the three-dimensional model of airplane wing was drawn in CATIA software. Then, by transferring the model to the ...  Read More

A Parametric Study for Vibration Analysis of Composite Cylindrical Shell Resting under Elastic Foundation: Analytical and Numerical Methods

M. Noorabadi; N. Namdaran; M. Rahnama; Jafar Eskandari Jam

Volume 11, Issue 2 , October 2017, Pages 13-22

  The aim of this study is to investigatethe effective parameters on vibrations of circular cylindrical shells with fixed rotary speed andresting elastic foundation by means of analytical and finite element numerical simulation. First, the governing equations are derived using the theory of Donnell, considering ...  Read More

Adaptive Quaternion Attitude Control of Aerodynamic Flight Control Vehicles

S. M. Hoseini

Volume 11, Issue 2 , October 2017, Pages 23-32

  Conventional quaternion based methods have been extensively employed for spacecraft attitude control where the aerodynamic forces can be neglected. In the presence of aerodynamic forces, the flight attitude control is more complicated due to aerodynamic moments and inertia uncertainties. In this paper, ...  Read More

Buckling and Post-buckling Analysis of FG-CNTRC Beams: An Exact Closed Form Solution

H. Shafiei; A.R. Setoodeh

Volume 11, Issue 2 , October 2017, Pages 33-41

  The present work derives the exact analytical solutions for buckling and post-buckling analysis of nano-composite beams reinforced by single-walled carbon nanotubes (SWCNTs) based on the Euler-Bernoulli beam theory and principle of virtual work. The reinforcements are considered to be aligned in the ...  Read More

Optimization of Composite Stiffened Cylindrical Shell using PSO Algorithm

M. Fakoor; P. Mohammadzade; E. Jafari

Volume 11, Issue 2 , October 2017, Pages 43-51

  Composite stiffened cylindrical shells are widely used as primary elements in aerospace structures. In the recent years, there has been a growing research interest in optimum design of composite stiffened cylindrical shell structures for stability under buckling load.  This paper focuses upon the ...  Read More

Optimization of Sound Transmission Loss of a Composite Rectangular Plate with Infinite Baffle

A. nouri; S. Astaraki

Volume 11, Issue 2 , October 2017, Pages 53-63

  In this paper, optimization of the sound transmission loss of finite rectangular anisotropic laminated composite plate with simply supported boundary conditions has been developed to maximize transmission loss. Appropriate constraints were imposed to prevent the occurrence of softening effect due to ...  Read More