بسمه تعالی - Sharif



بسمه‌ تعالی

Structural Analysis 45-136

Instructor: Hassan Haddadpour

Haddadpour@sharif.edu

Description:

This course will address issues related to aerospace structural analysis under different loadings.

Course Objectives

This course is designed to familiarize the students with the airframe structural analysis. After a review of some topics in strength of materials, the students will learn some new topics such as energy methods and matrix methods in structural analysis. In the main part of the course the students will be familiarized with the airframe structures and will learn how to analyze thin-walled structures under different loads.

Syllabus

Introduction

• Stress

• Equations of equilibrium

• Principal stresses

• Strain

• Compatibility equations

• Principal strains

• Stress–strain relationships

• Experimental measurement of surface strains

Energy Methods of Structural Analysis

• Elastic strain energy

• Virtual work method

• Deflections by virtual work method

• Unit load method

• Elastic energy methods

• Castigliano’s theorems

Basics of Airframe Structures

• Materials of aircraft construction

• Loads on structural components

• Function of structural components

• Fabrication of structural components

Stress Analysis of Thin-Walled Structures

• Bending of open and closed section beams

▪ Neutral axis

▪ Deflection due to bending

▪ Approximations for thin-walled sections

▪ General stress strain and displacement relations for open and single cell closed section thin-walled beams

• Shear of open section beams

• Shear of closed section beams

• Torsion of closed section beams

• Analysis of combined open and closed sections

• Structural idealization

Stress Analysis of Aircraft Components

• Fuselage

• Wing

• Frame and rib

Matrix Methods (Finite Element Method) of Structural Analysis

• Stiffness matrix for elastic springs

• Matrix analysis of pin-joined frameworks

• Stiffness matrix for uniform beams

Course outcome

Some of the immediate outcomes of this course for students taking it will be:

1. Familiarity with the basics of elasticity

2. Familiarity with the structural elements of an airplane

3. Understanding the basics of aircraft structural analysis

Text Book

T. H. G. Megson, Aircraft Structures for Engineering Students (Third Edition), Arnold Publishers, 1999.

Other References

1. Bruhn, Analysis & Design of Flight Vehicle Structures, Jacobs & Associates, Inc. 1973.

2. Perry D. J., Azar, J. J., Aircraft Structures, McGraw-Hill, 1982.

3. Michael C. Y. Niu, Airframe Structural Design: Practical Design Information and Data on Aircraft Structures, Conmilit Press Ltd, 1999.

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