JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Pre-requisite

Nil

Course Objectives:

The student will gain insight into a number of potentially useful phenomena involving movement of solids and fluids. He/she will learn to do elementary calculations for engineering application of fluid motion. This course also prepares the student for more advanced courses such as Aerodynamics- I & -II.

Course Outcomes:

It makes the student ready to understand advance Aero dynamics.

UNIT - I

Simple Stresses & Strains : Elasticity and plasticity – Types of stresses & strains–Hooke’s law– stress – strain diagram for mild steel – Working stress – Factor of safety – Lateral strain, Poisson’s ratio & volumetric strain – Elastic moduli & the relationship between them – Temperature stresses. Strain energy – Resilience – Gradual, sudden, impact and shock loadings.

UNIT - II

Shear Force and Bending Moment : Definition of beam – Types of beams – Concept of shear force and bending moment – S.F and B.M diagrams for cantilever, simply supported and overhanging beams subjected to point loads, u.d.l., uniformly varying loads and combination of these loads – Point of contra flexure – Relation between S.F., B.M and rate of loading at a section of a beam. Flexural Stresses : Theory of simple bending – Assumptions – Derivation of bending equation: M/I = f/y = E/R Neutral axis – Determination bending stresses – section modulus of rectangular and circular sections (Solid and hollow).

UNIT - III

Torsion of Circular Shafts : Theory of pure torsion – Derivation of Torsion equations : T/J = q/r = Nθ/L – Assumptions made in the theory of pure torsion – Torsional moment of resistance – Polar section modulus – Power transmitted by shafts – Combined bending and torsion and end thrust.

UNIT - IV

Fluid Properties: Density, specific weight, specific gravity, surface tension & capillarity, Newton’s law of viscosity, incompressible & compressible fluid, numerical problems. Hydrostatic forces on submerged bodies: Pressure at a point, Pascal’s law, pressure variation with temperature and height, Center of pressure on vertical, inclined and curved surfaces. Manometers- simple and differential manometers, inverted manometers, micro manometers, Pressure gauges and numerical problems. Buoyancy- Archimedes’s Principle, Metacenter, meta centric height calculations.

UNIT - V

Fluid Kinematics: Stream line, path line, streak line, stream surface, stream tube, and classification of flows: steady, unsteady, uniform, non uniform, laminar, turbulent flows. One dimensional approximation, examples of real 1-D flows, two dimensional approximations. Fluid Dynamics: Surface & body forces, substantive derivative, local derivative and convective derivative, momentum equation, Euler equation, Bernoulli’s equation, Phenomenological basis of Navier-Stokes equation, simple problems.

TEXT BOOKS:

• 1. Solid Mechanics, by Popov
• 2. Strength of Materials by Bhanikatti.
• 3. Strength of Materials by S.S.Rattan, Tata McGraw Hill Education Pvt. Ltd.
• 4. Engineering Fluid mechanics – K.L . Kumar, S. Chand & Co.
• 5. Fluid Mechanics – Frank M and White, Mc-Grawhill.

REFERENCES:

• 1. Strength of Materials -By Jindal, Umesh Publications.
• 2. Strength of Materials by D.S Prakash Rao, Universities Press Pvt. Ltd.
• 3. Fundamentals of Solid Mechancis by M.L.Gambhir, PHI Learning Pvt. Ltd
• 4. Strength of Materials by R.K Rajput, S.Chand & Company Ltd.
• 5. Fluid Mechanics - Fox and Mc Donald
• 6. Fluid Mechanics – E. Rathakrishnan.