AS3402 Aerospace Structural Mechanics Syllabus:
AS3402 Aerospace Structural Mechanics Syllabus – Anna University Regulation 2021
COURSE OBJECTIVES:
Of this course are
1. To provide the students an understanding of linear static analysis of determinate and indeterminate aircraft structural components.
2. To introduce the advanced concepts in the stress analysis of beams.
3. To impart knowledge and enable the student work out a variety of problems in structural analysis applying energy principles.
4. To impart knowledge on column theory and practical column design.
5. To allow the student to differentiate between various failures theories and appropriately apply a failure theory in design.
UNIT I BEAM & TRUSS ANALYSIS
Built-Up Beams – Composite Beams – Transformed-Section Method – Types of Statically Indeterminate Beams – Use of The Principle of Superposition – Analysis of Continuous Beams – Clapeyron’s 3-Moment equation – Plane Frame Analysis – Truss Analysis in 2-D & 3-D.
UNIT II ENERGY METHODS
Energy methods – Determination of Strain Energy and Complementary Energy in a Structural Member – Castigliano’s Theorems – Unit Load Method – Dummy Load Method – Application to Deflection Problems in Statically Determinate and Statically Indeterminate Systems – Beams, Trusses, Frames and Rings.
UNIT III BUCKLING OF COLUMNS
Buckling and Stability – Columns with Pinned Ends – Columns with Other Support Conditions – Euler’s Curve – Columns with Eccentric Axial Loads – The Secant Formula for Columns – Elastic and Inelastic Column Behavior – Inelastic Buckling – Design Formulas for Columns – Ideal Column Section.
UNIT IV FAILURE ANALYSIS
Failure of Ductile and Brittle Materials – Theories of Failure – Maximum Normal Stress & Maximum Shear Stress Failure Envelopes – Distortion Energy Failure Theory – Octahedral Shear Stress Failure Theory – Material Fatigue – Introduction to Fatigue Failure and Fracture – Repeated Loading – The S-N Curve
UNIT V DESIGN OF JOINTS
Type of Joints – Bolted Joints – Determination of Stresses & Design of a Bolted Joint for Axial, Shear, and Combined Loading – Basic Design of a Welded Joint – Strength of Welding – Different Types of Rivets and Riveted Joints – Loading on a Riveted Joint – Failure Modes – Strength and Efficiency of Joints.
TOTAL: 45 PERIODS
COURSE OUTCOMES:
Upon completion of the course, Students will be able to
CO1: Solve problems in Beam & Frame Analysis.
CO2: Solve problems using Energy Methods.
CO3: Solve problems in column buckling and carry out stability analysis.
CO4: Use appropriate failure theories for structural mechanics problems.
CO5: Design different types of Joint under different loading conditions.
TEXT BOOKS:
1. Peery, D.J., and Azar, J.J., Aircraft Structures, 2nd edition, McGraw – Hill, N.Y., 1999.
2. R.K. Rajput ‘Strength of Materials’, S.Chand Ltd, 4th, Edition, 2006.
REFERENCES:
1. Bruhn E F, ‘Analysis and Design of Flight Vehicle Structures’, Tri-State Off-set Company, USA, 1985.
2. Donaldson, B.K., ‘Analysis of Aircraft Structures – An Introduction’ Cambridge University Press publishers, 2nd edition, 2008