AS4102 Aerospace Structural Analysis Syllabus:
AS4102 Aerospace Structural Analysis Syllabus – Anna University PG Syllabus Regulation 2021
COURSE OBJECTIVES:
This course will enable students
1. To learn the important technical aspects on theory of bending.
2. To find the shear flow distribution and to locate the shear centre for open and closed sections.
3. To analyse the stability problems involved in aircraft structural components under various modes of loadings.
4. To impart knowledge on how to analyze aircraft structural components under various forms of loading.
5. To gain knowledge on the spacecraft structures and materials used.
UNIT I BENDING OF BEAMS
Elementary theory of pure bending – Stresses in beams of symmetrical and unsymmetrical sections – Box beams – Generalized theory of bending – Methods of bending stress determination – Principal axes method – Neutral axis method – ‘k’ method – Deflection of unsymmetrical beams – Stresses in Composite Beams – Deflection of Sandwich Beams – Design Principles.
UNIT II SHEAR FLOW ANALYSIS
Concept of shear flow in thin walled open & closed sections – Determination of the shear centre in symmetrical and unsymmetrical cross-sections – Flexural shear flow in multi-flange box beams – Shear flow due to combined bending & torsion in closed sections – Torsion of thin walled open section members – Stress analysis of aerospace components – Tapered wing spar.
UNIT III DESIGN OF COMPRESSION MEMBERS
Analysis of solid columns – Governing Equations – Critical Loads & Buckled Modes – Thin walled Compressions Members – Stability Analysis – Design Criterion – Buckling of sheets under compression – Plate buckling coefficient – Inelastic buckling of plates – Sheet-stiffener panels – Effective width – Failure stress in plates and stiffened panels – Local Buckling – Crippling Load Estimation.
UNIT IV ANALYSIS OF AEROSPACE STRUCTURAL COMPONENTS
Loads on an aircraft – Aerodynamic loads – Manoeuvre loads – Load factor determination – The flight envelope – Shear force, bending moment and torque distribution along the span of the wing and fuselage – Structural parts of wing and fuselage and their functions – Introduction to aeroelasticity – Sources of launch vehicles loads – Launch vehicle categories – Load and acceleration time-line profile.
UNIT V REQUIREMENTS OF SPACECRAFT STRUCTURES
Introduction & General Aspects – The Satellite Primary Structure – Load Classification – Typical Requirements – Strength – Failure Theories – Buckling – Sources of Vibration – Frequency Limits – Stiffness, Damping & Mass Distribution – Satellite Vibration Analysis – Response Spectrum – Design Requirements – Materials Used for Construction – Mechanical Interfaces.
TOTAL: 60 PERIODS
COURSE OUTCOMES:
Upon completion of the course, students will be able to
CO1: Apply the concept of normal stress variation on unsymmetrical sections subjected to bending moments on practical problems.
CO2: Find the shear flow variation in thin walled open sections with skin effective and ineffective in bending.
CO3: Evaluate the shear flow variation in single cell and multi-cell tubes subjected to shear and torque loads.
CO4: Analyse the behaviour of buckling of simply supported plates and also to know the effective width of sheet stringers combination.
CO5: Analyse and design structural members subject to compression.
REFERENCES:
1. Bruce.K.Donaldson, “Analysis of Aircraft Structures: An Introduction”, Cambridge University Press, 2nd edition, 2008.
2. Bruhn. EF, “Analysis and Design of Flight Vehicle Structures”, Tristate Offset Co, 1980.
3. Megson, TMG, “Aircraft Structures for Engineering Students”, Elsevier Aerospace Engineering Series, 5th Edition, 2012.
4. Peery, DJ and Azar, JJ, “Aircraft Structures”, 2nd Edition, McGraw-Hill, New York, 1993.
5. Rivello, RM, “Theory and Analysis of Flight Structures”, McGraw-Hill, N.Y., 1993.
6. Sun. CT, “Mechanics of Aircraft Structures”, Wiley publishers, 3rd edition, 2021.