Aerospace Science and Technology
Analytical and Numerical Investigation of Effective Parameters on Energy Absorption Circular Composite Tube under Internal Pressure and Axial

Milad Noorabadi; Rahnama Malihe; Ghasemi Mohammad Amin; Jafar Eskandari Jam

Volume 12, Issue 2 , October 2019, , Pages 1-9

  In this paper the energy absorption capacity of stiffened circular composite tube is considered. The governing equations and dynamic equilibrium are first derived and then solved. Additionally, a finite element model of reinforced circular composite tube structure is modeled. At the following, the effects ...  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

Loading Estimation of Flapping Wings under Aeroelastic Effect Using Finite Element Method

Hossein H. Shahverdi; A.S Nobari; H Bahrami Torabi

Volume 11, Issue 1 , June 2017

  The aim of this paper is to provide an aeroelastic computational tool which determines the induced wing loads during flapping flight. For this purpose, a Finite Element (FE) code based on a four-node plate bending element formulation is developed to simulate the aeroelastic behavior of flapping wings ...  Read More

Development of a Design Procedure for Aeronautical Structures Based on Reliability

F. Javidrad; F. Dabirian

Volume 7, Issue 1 , March 2010, , Pages 59-67

  In this paper, an approach to aeronautical structural design based on reliability analysis is presented. In this way, the concept of level of safety is discussed and methods of its calculation using statistical data are described. Based on the concept of level of safety, a design procedure is proposed. ...  Read More

Assessment of the Existing Models to Estimate the Fatigue Life under both Multiaxial in Phase and 90° Out of Phase Loading Conditions

Rahmatollah Ghajar; G. R. Rashed

Volume 4, Issue 3 , September 2007, , Pages 25-35

  Engineers have a range of methods to estimate the fatigue life under multiaxial conditions. Each of these predictive methods is generally subjected to restrictions, related to the inherent simplified assumptions. The objective of this paper is to evaluate the validity of commonly used multiaxial fatigue ...  Read More

Damage Assessment using an Inverse Fracture Mechanics approach

F. Javidrad

Volume 4, Issue 1 , March 2007, , Pages 25-32

  This paper studies the application of an inverse methodology for problem solving in fracture mechanics using the finite element analysis. The method was applied to both detection of subsurface cracks and the study of propagating cracks. The procedure for detection of subsurface cracks uses a first order ...  Read More