WITH EFFECT FROM THE ACADEMIC YEAR 2014-2015 CE 214 STENGTH OF
MATERIALS IInstructions per week: 4 (Theory) +2 (Tutorials)
Duration of UniversityExamination :3 hours UniversityExaminations
:75 Marks Sessionals :25 Marks Credits : 4 Credits Course
Objectives: 1.To understand the basic concept of the stress and
strain for different materials. 2.To know the mechanism of the
development of shear force and bending moments in beams. 3.To
analyse and understand bending stress and shear stress. 4.To study
compound stresses, direct and bending stresses in different
members. 5.To know the concept of unsymmetrical bending and shear
centre for different members. Course Out comes :At the end of the
course the student should have learnt 1.To evaluate the strength of
various Civil Engineering materials, against structural actions
such as compression, tension, shear, bending. 2.To suggest suitable
material from among the available, for use in Civil Engineering
context. 3.To evaluate the behaviour and strength of Civil
Engineering materials under the action of compound stresses and
thus understand failure concepts. 4.To design thin and thick
cylinders for resisting fluid pressures and/or shrink fit
pressures. 5.To evaluate the behaviour of members under
unsymmetrical bending and locate shear centers for section with the
axis of symmetry.UNIT-I Simple Stresses and Strains: Definitions of
stresses and strains. Hookes law, Modulus of
Elasticity.Stress-Straincurveforductilematerials.Workingstressandfactorofsafety.
Deformationofbarsunderaxialloads.Uniformsectionsandabruptlyvaryingsections.
Deformation due to self weight. Bars of uniform strength. Poissons
ratio, Volumetric strain
andrestrictedstrains.Relationshipbetweenelasticconstants.Compoundbarsand
temperaturestresses.Staticallyindeterminateproblemsintensionandcompression.
Temperature stresses. UNIT-II Shear force and Bending moment:
Definitions-Different types of beams and loads-Shear force and
bending moment diagrams for cantilever, and simply supported beams
with and without over hangs subjected to different kinds of loads
viz, point loads, uniformly distributed loads, uniformly varying
loads and couples- Relation between loading , shear force and
bending moments.Bending stresses in Beams.: Assumptions in theory
of simple bending-Derivation of bending equation , Moment of
resistance Calculation of stresses in statically determinate beams
for different loads and different types of structural sections-
Flitched beams. UNIT-III
ShearstressesinBeams.:Equationofshearstresses,distributionacrossrectangular,
circular,triangular , I , T and diamond sections .
Directandbendingstresses:Basicconcept,Eccentricloading,limitofeccentricity
coreofsections-rectangularandcircular,solidandhollowsections.Windpressureon
chimneys and water pressure on dams. UNIT-IV Compound Stresses and
Strains: Stresses on oblique planes, principal plane and principal
stresses. Ellipse of stressand Mohscircle of stress. Thin
cylinders: Thin cylinders subjected to internal fluid pressure.
Volumetric change .Wire winding of thin cylinders. Thick cylinders
& spheres: Lamesequations , stresses under internal and
external fluid pressure. Compound cylinders-shrink fit pressure..
UNIT-V Unsymmetrical bending of beams: Locationof neutral axis,
maximum stresses for rectangular section. Symmetric channel
section. Shear Centre: Shear stress, shear flow, locating shear
center for angle section, channel section and T-section , with one
axis of symmetry. Text Books: 1.B.C.Punmia, Mechanics ofMaterials,
Laxmi publishers, Delhi, 2011. 2.S.Ramamrutham, Strength of
Materials, Dhanpat Rai & Sons, Delhi, 2012 3. S.B. Junnarkar,
Mechanics of structures ( Vol-I & Vol-II), Charotar Publishing
house, Anand, 2002. References: 1.D.S. Prakash Rao, Strength of
Materials-A Practical Approach, Universities Press, Hyd 1999. 2.
E.P. Popov, Engineering Mechanics of solids, 1993. 3. G.H. Ryder,
Strength of Materials, 3rd Edition in SI units, Macmillan India
Ltd, Delhi,2012. 4. A.Pytel and F.L.Singer, Strength of Materials ,
Harper & Row , 4th Edition, New York,1987.
