GANPAT UNIVERSITY

B.Tech. Sem. III – Civil Engineering

C – 302 Mechanics of Structures

Teaching Scheme (Hrs)

Examination Scheme (Marks)

Theory

Practical

Sem End

Lect.

Pract.

Total

Internal

Asses.

Marks

Hrs

Total

Internal

Asses.

Sem.

End

Total

Grand Total

4

2

6

30

70

3

100

25

25

50

150

COURSE CONTENT

:

I

PHYSICAL AND MECHANICAL PROPERTIES OF MATERIALS:

Axial, bending and tensional loading, tension, compression, shear, hardness, fatigue,

stiffness, impact etc. relevant laboratory test.

II

STRESSES AND STRAINS

Concept of stress, normal stress, simple stress, simple strain, Hook’s law, working stress, factor

of safety, bar of varying cross section, bar of tapering section, stresses in composite

members.

III

THERMAL STRESSES & STRAINS

Determination of thermal stress and strain, thermal stress in composite members.

IV

ELASTIC CONSTANTS

Introduction, Poisson’s ratio, volumetric strain, relation between elastic constants.

V

SHEAR FORCE AND BENDING MOMENT

Types of beams, actions on the cross section of a beam, sign convention, shear force,

bending moment and axial force diagrams of cantilever, simply supported, fixed and

overhung beams, principle of superposition, variable loading, beam with couples, inclined

load, inclined beams, graphical methods.(Shear force and bending moment of different

load conditions).

VI

BENDING STRESSES IN BEAMS

Introduction, simple bending, theory of simple bending, moment of resistance, modulus of

section, beam of uniform section, composite section, laminated spring

VII

SHEARING STRESSES IN BEAMS

Introduction, shear stress distribution for beam of rectangular, circular, triangle and I-

section.

VIII

PRINCIPAL STRESSES AND STRAINS

Principal planes, principle stresses, Analytical method for principal stress, Mohr’s circle of

stress and strain, Theories of failure.

IX

TORSION

Basic assumption, Torsion formula, Design of circular sections, Angle of twist, Shearing stress,

Deformation, Closed coiled helical springs, Helical Springs, power transmitted by shaft, keys

& coupling.

X

THICK AND THIN CYLINDER

Introduction, Thin cylinder and thin spherical vessels under pressure, Applications of thin

cylinder, Hoop and radial Stresses in cylinders, longitudinal stresses in thick cylinder,

Application of thick cylinder, Max circumferential and Radial stresses in thick cylinders

XI

STRAIN ENERGY

Resilience, Strain in spring, Strain energy in tension, compression, Shear bending torsion,

Proof resilience, Impact loads, Sudden loads

XII

COLUMNS AND STRUTS

Short column subjected axial forces and bending moments, engineering problems, long

columns, stability and equilibrium, ranking formula, Indian standard formula, criteria for

design of columns

XII

DIRECT AND BENDING STRESSES:

Members subjected to eccentric loads, middle third rule, and kernel of section, chimney

subjected to wind pressure, retaining walls and dams subjected to hydraulic pressure

PRACTICAL WORK

The practical work shall be based on experimental and analytical work on the topics mentioned

above and will be defended by the candidates.

REFERENCE BOOKS

:

I

Mechanics of structure vol I – By S. B. Junnarkar and H.J. Shah,

Charotar publishing house, Anand

II

Strength of Materials – By S. Ramamrutham , Dhanpat rai & Sons.

III

Strength of Materials – By R. S. Khurmi , S. Chand & Co. New Delhi

IV

Strength of Materials – By M. Chakraborti, S. K. Kataria & Sons

V

Engineering Mechanics Of Solids By E. P. Popove

VI

Mechanics Of Materials By Gere & Timoshenko

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