IOE Syllabus – Strength of Materials

ME 552

Lecture

:

3

Year

: II

Tutorials

:

1

Part

: II

Practical

:

3/2

1.

Introduction

(2 hours)

1.1

Types of Stresses and strains

1.2

Normal stress, shear stress, bearing stress

1.3

Normal strain, shear strain

1.4

Ultimate stress, allowable stress, factor of safety

2.

Stress and strain – axial loading

(6 hours)

2.1

Stress – strain diagram

2.2

Hooke’s law, modulus of elasticity

2.3

Deformation under axial load

2.4

Temperature effects

2.5

Poisson’s Ratio

2.6

Multi-axial loading, Generalized Hooke’s Law

2.7

Bulk Modulus

2.8

Shearing Strain

2.9

Relationship among modulus of elasticity, shear stress and Poisson’s ratio

2.10

Stress Concentration and Plastic Deformation

2.11

Statically Indeterminate problems

3.

Pure Bending

(5 hours)

3.1

Introduction of pure or simple bending

3.2

Deformation of a symmetric member in pure bending in elastic range.

(Relationship between transverse loads, bending moment and bending stresses,

position of neutral axis and neutral layer)

3.3

Beams with composite section.

3.4

Stress concentration, plastic deformation

3.5

Eccentric axial loading

3.6

Unsymmetrical loading.

4.

Torsion

(5 hours)

4.1

Introduction Torque, Shaft, Torsion

4.2

Stress and deformation in a uniform shaft in elastic range

4.3

Torsion moment diagram.

4.4

Torsion formula for circular cross-section

5.

Transverse loading

(3 hours)

5.1

Basic assumptions and distribution of normal stress.

5.2

Relationship between shear stress and shear force in a beam.

5.3

Distribution of Shear stress in common beam sections.

6.

Transformation of stress and strain

(6 hours)

6.1

Uniaxial stress system, biaxial stress system, pure shear stress system.

6.2

General plane stress system, principal stresses, maximum shearing stress,

principal planes

6.3

Graphical method: Mohr’s circle for plane stress

6.4

Application to three- dimensional state of stress

6.5

Yield criteria for ductile and brittle material.

7.

Deflection of Beams by Integration Method

(6 hours)

7.1

General deflection equation for beams.

7.2

Deflection equation for beams with different end conditions.

7.3

Method for superposition.

7.4

Deflection in statically indeterminate beams.

7.5

Direct determination of the elastic curve from the load-distribution.

8.

Deflection of Beams by Moment- area Method

(4 hours)

8.1

Moment- Area Theorems.

8.2

Application to symmetrical structure and symmetrical loading, unsymmetrical

structure and symmetrical loading, symmetrical structure and unsymmetrical

loading.

8.3

Maximum deflection in beams.

9.

Design of Beams and shafts

( 5 hours)

9.1

Basic Consideration for the design of prismatic beams ( for ductile, brittle

material and for short and long beam)

9.2

Principal stresses in beams

9.3

Design of prismatic beams

10.

Columns

( 3 hours)

(3 hours)