JNTUK B.Tech Aerospace Vehicle Structures – I gives you detail information of Flight Aerospace Vehicle Structures – I R13 syllabus It will be help full to understand you complete curriculum of the year.
Course Objective
The main objective of the subject is to study the response of common engineering structures like beams, Un- Symmetric beams column, indeterminate beams and frames. The subject also dealt the concepts like tension field, Semi-tension field beams. The student also able to calculate Shear flow in the thin sections like T,L ,I and Z – sections and their effects on the structural stability
UNIT I : Redundant Structures : Indeterminate structures and order of redundancy. Introduction to redundant analysis. Statically determinate models. Use of free body diagrams to explain compatibility and redundant analysis principles. Matrix methods of redundant analysis utilizing (a) equilibrium equations / compatibility conditions and (b) Singularity method for uniform beams with various boundary and support conditions (props, hinges and fixities) subjected to distributed / discrete loads (including moments).
UNIT II :Beams With Elastic Supports And Initial Curvature: Direct solution of beams on elastic foundation Deflection of beams with discrete elastic supports using singularity methods and modeling concepts. Equation of equilibrium for curved beam stress and deflections of a typical curved beam (Bulk Head segments on fuselages).
UNIT III : STABILITY : Stability of Structural systems, Modes of instability of columns. Euler’s formula for critical loads of column. Slenderness ratio, Effect of boundary conditions on mode shapes and critical loads. Column with initial curvature, effect of eccentricity. Long, medium and short column ranges. Rankine and Jhonson’s formulae. Eigen values and Eigen modes. Effect of intermediate supports. Concept of beam column.
UNIT IV : Introduction To Theory Of Elasticity : Equilibrium and Compatibility conditions for elastic solids. 2D elasticity equations for plane stress, plane strain and generalized plane strain cases Airy’s stress function. Simple problems in plane stress / plane strain using Cartesian and polar coordinates. Super position techniques. Examples include (a) panels subjected to a generalized plane strain Biaxial loading (b) Uniform/Linearly varying edge loads on elastic half plane (c) Thick cylindrical shells. Stresses and Strains on arbitrary planes and transformations. Concept of principal planes, stress and Strains. Construction of Mohr’s circle. Failure mechanism and fracture modes.
UNIT – V : Energy Principles And Methods : Introduction to energy principles and methods. Principles of Virtual Displacement and Principle of Virtual Force Castigliano’s theorems, Maxwell’s reciprocal theorem and Unit load method. Direct application of energy principles to beams and trusses. The displacement method (Rayleigh Ritz method). Admissible functions energy and work expressions for redundant analysis of 1-D structures (rods, shafts and beams). Various 1D Structures subjected to Complex loading. Stresses, of errors and convergence.
UNIT – VI : Shear Flow In Closed Sections : Bredt-Batho formula. Single and multi-cell closed box structures. Semi monocoque and moncoque structures. Approximate method for box beams. Shear flow in single and multicell monocoque and semi monocoque box beams subject to torsion.
TEXT BOOKS
- Timoshenko S. P. and J.N. Goodier, “Theory of Elasticity McGraw Hill Book Co.
- Donaldson, B. K. Analysis of Aircraft Structues-An introduction “McGraw Hill
REFRENCE BOOKS
- Shames I. H. and Dym C. L. Energy and finite element methods structural analysis McGraw Hill
- Megson THG, “Aircraft Structures for Engineering students”, Edward Arnold Publication.
- B.C.Punmia, “Theory of Structures”, Laxmi Publication.
- S.Ramamrutham, R.Narayanan, “Theory of Structures” – Dhanpat Rai Publishing Co, 2003.
- Argyris J. H. and Kelsey S. energy theorems and structural analysis, Butterworths Scientific Publications.1960
Course Outcomes:
At the end of the course the students shall be able to
Study the response of common engineering structures like beams and columns Recognize Un-Symmetric beams, beam columns, indeterminate beams and frames. Understand the concepts like tension field, Semi-tension field beams. Calculate Shear flow in the thin sections like T,L ,I and Z – sections and their effects on the structural stability.
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