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Course Title:
STRENGTH OF MATERIALS |
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Scheme (L:T:P) : 4:0:0 |
Total
Contact Hours: 52 |
Course Code: 15ME31T |
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Type of Course: Lectures,
Self Study & Quiz |
Credit :04 |
Core/
Elective: Core |
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CIE- 25 Marks SEE-100 Marks |
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Prerequisites: Knowledge of basic
mathematics and Science.
1. The subject is pre-requisite
for understanding principles of Machine design.
2.
Understanding the mechanical properties of materials will
help in selecting the suitable materials for various engineering applications
On successful completion of the course, the students
will be able to attain CO:
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Course
Outcome |
CL |
Linked PO |
Teaching Hrs |
|
|
CO1 |
Understand and distinguish the behavior of simple load carrying members
subjected to an axial, shear, and thermal Loading. |
R/U/A |
1,2,3,9 |
14 |
|
CO2 |
Interpret the Variation of the moment of inertia for different Mechanical
Engineering Sections such as fly wheel |
R/U/A |
1,2,4,9 |
10 |
|
CO3 |
Draw and Compare the shear force and bending moment diagram on beams under varying load conditions. |
R/U/A |
1,2,4,9 |
12 |
|
CO4 |
Assess Bending and shear stresses in beams subjected to
different loadings for different machine parts |
R/U/A |
1,2 |
07 |
|
C05 |
Differentiate in strain energy stored in a body
when the load is suddenly applied and gradually applied |
U/A |
1,2 |
03 |
|
C06 |
Design simple solid and
hollow shaft for power transmission keeping view of Environmental and
sustainability aspects |
R/A |
1,2,6 |
06 |
|
|
|
Total
sessions |
52 |
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Legend: R; Remember, U:
Understand A: Application
COURSE-PO ATTAINMENT
MATRIX
|
Course |
Programme Outcomes |
|||||||||
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
|
|
STRENGTH OF
MATERIALS |
3 |
3 |
1 |
3 |
- |
1 |
- |
- |
3 |
- |
Level 3- Highly Addressed, Level
2-Moderately Addressed, Level 1-Low Addressed.
The method is to relate
the level of PO with
the number of hours devoted
to the COs which address
the given PO. If
>40% of classroom sessions addressing a particular PO, it is considered that
PO is addressed at Level
3
If 25 to 40% of classroom sessions
addressing a particular PO, it is considered that the PO is addressed at Level 2 If
5 to 25% of classroom sessions addressing a particular PO, it is considered that the PO is addressed at Level 1
If < 5% of classroom sessions addressing a particular PO,
it is considered that the PO is considered not-addressed.
COURSE CONTENT AND BLUEPRINT
OF MARKS FOR SEE
|
Unit No |
Unit Name |
Hour |
Questions to be set for SEE |
Marks weightage |
the weightage (%) |
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|
R |
U |
A |
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|
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|
1 |
SIMPLE
STRESSES AND STRAINS |
14 |
05 |
05 |
20 |
30 |
21 |
|
2 |
MOMENT OF
INERTIA |
10 |
05 |
05 |
20 |
30 |
21 |
|
3 |
SHEAR FORCE
AND BENDING MOMENT |
12 |
05 |
05 |
20 |
30 |
21 |
|
4 |
THEORY OF
SIMPLE BENDING |
07 |
05 |
05 |
20 |
30 |
21 |
|
5 |
STRAIN
ENERGY AND IMPACT LOADING |
03 |
- |
05 |
05 |
10 |
06 |
|
6 |
TORSION OF
CIRCULAR SHAFT |
06 |
05 |
-- |
10 |
15 |
10 |
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Total |
52 |
25 |
25 |
90 |
145 |
100 |
Legend: R; Remember, U: Understand A: Application
Simple
stresses & strains viz. tensile, compressive, Shear, Crushing, Thermal
stresses, & corresponding strains,Hook’s Law –Problems on Direct Stress
& Linear Strain- Stress-Strain curve for Ductile material and Brittle
material with all parameters.- Factor of Safety. Elastic Constants - Lateral
Strain ,Poisson’s ratio, Bulk Modulus, Shear Modulus ,Volumetric Strain- The relation between elastic constants- Problems on elastic constants. Hoop
stress-Longitudinal Stress in thin cylindrical & spherical shells subjected
to internal pressure.-Problems on thin cylindrical shells.
Centre of Gravity,
Moment of Inertia & its Importance -Parallel & Perpendicular Axis
Theorem-C.G of Rectangle, Triangle, Circle, Semi-circle, Trapezium,
Cone-Problems on
finding
CG of T-Section, I-Section, L-Section, Channel-Section. Moment of Inertia of
solid &Hollow sections like Rectangle, Triangle, Circle- Moment of Inertia
about C.G for I section, T section. L-section and Channel Section.
Definition - Shear Force and Bending
Moment –Types of beams, types of the load acting on
beams
,Sagging & Hogging Bending Moment and its importance –sign convention to
draw SFD and BMD- Concept of Maximum bending moment, Point of Contra flexure
& its importance-Drawing S.F & B.M Diagram for Cantilever, Simply
Supported Beams subjected to Point Load and U.D.L
Introduction,
assumptions in theory of simple bending.-Bending stress, relation between
bending stress & radius of curvature (without proof).-Position of neutral
axis, moment of resistance-Bending equation (without proof)-Modulus of section
for rectangular, hollow rectangular and hollow circular sections-Beams of
uniform Strength-problems
Introduction
-Strain Energy-Types of loading-Sudden, Gradual & Impact Load-resilience,
proof resilience and modulus of resilience-Equation for strain energy stored in
a body when the load is gradually applied and suddenly applied – problems.
Introductionto
Torsion , Angle of Twist , Polar Moment of Inertia , Torsion equation- (without
proof)-Assumptions in theory of Torsion -Power Transmitted by a shaft, axle of
solid and hollow sections subjected to Torsion - Comparison between Solid and
Hollow Shafts subjected to pure torsion- Problems. (No problem on composite and
non homogeneous shaft)
®TEXT BOOKS
1.
Ramamurtham. S., “Strength of
Materials”, 14th Edition, Dhanpat Rai Publications, 2011
2.
Khurmi R S, “Applied Mechanics
and Strength of Materials”, 5 Edition, S.Chandand company
REFERENCES
1. Popov E.P, “Engineering Mechanics of Solids”, 2nd
Edition, Prentice-Hall of India, New Delhi,
2002.
2. Nash W.A, “Theory and problems in Strength of
Materials”, Schaum Outline Series, McGraw-Hill Book Co., New York, 1995.
3. Kazimi S.M.A, “Solid Mechanics”, Tata McGraw-Hill
Publishing Co., New Delhi, 2003.
4.
Ryder G.H, “Strength of
Materials”, 3rd Edition, Macmillan India Limited, 2002.
5.
Bansal R. K, “Strength of
Materials”, Laxmi Publications, New Delhi,
2012.
6.
Timoshenko S.P, “Elements of
Strength of Materials”, Tata McGraw-Hill,
Delhi,
LIST OF SOFTWARE/LEARNING WEBSITES
1.
www.nptel.iitm.ac.in/courses/.../IIT.../lecture%2023%20and%2024htm
2.
www.wikipedia.org/wiki/Shear_and_moment_diagram
3.
www.freestudy.co.uk/mech%20prin%20h2/stress.pdf
4.
www.engineerstudent.co.uk/stress_and_strain.html
5.
https://www.iit.edu/arc/workshops/pdfs/Moment_Inertia.pdf
SUGGESTED LIST OF
STUDENT ACTIVITYS
Note: The following activities or similar activities
for assessing CIE (IA) for 5 marks (Any one).
1.
Each student should do any one of the following type activity or any
other similar activity related to the course and before conduction, get it
approved from concerned Teacher and HOD.
2.
Each student should conduct different activity and no repeating should occur
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1 |
Calculate Moment of Inertia of Fly Wheel of engine present in your
laboratory |
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2 |
Market Survey specific to properties of Various type of Materials
used in Mechanical Engineering and make report |
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3 |
Compare the strength of solid shaft with that of hallow shaft for
same power transmission for an automobile and make report |
Course Delivery:
å The course will be delivered through lectures
and Power point presentations/ Video.
å MODEL OF RUBRICS /CRITERIA FOR
ASSESSING STUDENT ACTIVITY
|
RUBRICS FOR ACTIVITY( 5
Marks) |
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Dimension |
Unsatisfactory |
Developing |
Satisfactory |
Good |
Exemplary |
Student Score |
|
1 |
2 |
3 |
4 |
5 |
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Collection of data |
Does not collect any information relating to the topic |
Collects very limited information; some relate to the topic |
Collect
much information; but very limited relate to the topic |
Collects some basic information; most refer to the topic |
Collects a great deal of information; all refer to the topic |
Ex:
4 |
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Fulfill
team’s roles & duties |
Does not perform any duties assigned to the team role |
Performs very little duties but unreliable. |
Performs
very little duties |
Performs nearly all duties |
Performs all duties of assigned team roles |
5 |
|
Shares
work equally |
Always
relies on others to do the work |
Rarely does the assigned work; often needs reminding |
Usually does the assigned work; rarely needs reminding |
Normally
does the assigned work |
Always does the assigned work without having to be
reminded. |
3 |
|
Listen to
other Team mates |
Is always talking; never allows anyone else to speak |
Usually does most of the talking; rarely allows
others to speak |
Talks good; but never show interest in listening
others |
Listens, but sometimes talk too much |
Listens
and speaks a fair amount |
2 |
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Average / Total
marks=(4+5+3+2)/4=14/4=3.5=4 |
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Note:
This is only an example. Appropriate rubrics/criteria may be devised by the
concerned faculty (Course Coordinator) for assessing the given activity.
Course Assessment and Evaluation Scheme:
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|
What |
To who
m |
When/Where (Frequency
in the course) |
Max Marks |
Evidence collected |
Course outcomes |
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|
Direct Assessment |
CIE |
IA |
|
Three IA tests (Average of three
tests will be computed) |
20 |
Blue
books |
1,2,3,4,5,6 |
|
Student activities |
05 |
Report/Log of activity |
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SEE |
End Exam |
End of the course |
100 |
Answer scripts at BTE |
1,2,3,4,5,6 |
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Indirect
Assessment |
Student Feedback on course |
|
Middle of the
course |
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Feedback
forms |
1
& 2,3 Delivery of course |
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End of
Course Survey |
End of the course |
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Questionnaires |
1,2,3,4,5,6 Effectiveness
of Delivery of instructions & Assessment Methods |
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Note: I.A. test
shall be conducted for 20 marks. Average marks of three tests shall be rounded
off to the next higher digit.
Note to IA
verifier: The following documents to be verified by CIE verifier at the
end of semester
1. Blue books( 20 marks)
2. Student suggested activities
report for 5 marks and should be assessed on
RUBRICS
3.
Student feedback on course regarding the Effectiveness of Delivery of
instructions & Assessment Methods.
