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CE 205: STRENGTH OF MATERIALS-I
Fall Semester 2010
INSTRUCTOR: Assistant Professor Shazim Ali Memon,
Phone: (051) 90854614Email:[email protected]
SCHEDULE: Reflected in Weekly Timetable issued by NICE
ROOM: Reflected in Weekly Timetable issued by NICEOFFICE HOURS: Open Door Policy
PREREQUISITES: Engineering Mechanics
TEXTBOOK: Mechanics of Materials (Seventh Edition) by James M. Gere, and Barry J.
Goodno, Cengage Learning, 2009
Course ObjectivesTo introduce students with the different types of loads, stresses and structural members
Course Outcomes
Students are expected to have a good concept of various types of loads, stresses and structural
members
TOPICS COVERED:
1. Simple Stress and Strain
Kinds of stresses and strains, Load extension diagrams for different materials, Hooks
law, Modulus of elasticity, Lateral strain, Volumetric strain, Poissons ratio, Temperaturestresses and compound bars.
2. Stresses in beams
Theory of simple bending, Moment of resistance and section modulus, Application of
flexure formula, Shear stresses in beams, Shear center, Shear flow.
3. Columns and Struts
Axially loaded columns, Eulers treatment, Rankine Gordon formula for short and
intermediate columns. Slenderness ratio
4. Circular shafts
Theory of torsion for solid and hollow circular shafts
5. Springs
Open coil springs, closed coil springs, leaf springs.6. Strain Energy
Strain energy due to direct loads, forc, bending moment and torque. Stresses due to
impact loads
7. Practicals
a. To perform tensile test on steel
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b. To perform compression test on wood sample with load parallel and perpendicular
to grains.
c. To perform impact test on metals.
d. To determine the crippling load for struts of varying slenderness ratios and end
fixing conditions.
e. To perform bending test on wooden beam.
GRADING POLICY:
Your overall grade will be determined on the basis of
4*Quizzes 7%
4*Assignments 6%
2*Class Tests 20%
Final Exam 34%
Practials 33%
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COURSE DISTRIBUTION ON WEEKLY BASIS
Weeks Chapters/Topics
Tension, Compression and Shear
1-3 Introduction to Mechanics of Materials
Normal Stress and Strain
Mechanical Properties of Materials
Linear Elasticity, Hookes Law, and Poissons Ratio
Shear Stress and Strain
Allowable Stresses and Allowable Loads
Axially Loaded Members
4-6 Introduction
Changes in Lengths of Axially Loaded Members
Changes in Lengths Under Nonuniform Conditions
Statically Indeterminate StructuresThermal Effects
Stresses on Inclined Sections
Torsion
7 Introduction
Torsional Deformation of Circular Bars
Circular Bars of Linearly Elastic Materials (Torsion Formula,
Angle of Twist, Circular Tubes)
Shear Forces and Bending Moments
8-10 Axial Force, Shear Force and Bending Moment
Shear Force and Bending Moment Diagrams
Relation Between Distributed Load, Shear Force and Bending
Moment
Stresses in Beams
11-13 Introduction
Pure Bending and Nonuniform Bending
Curvature of a Beam
Longitudinal Strains in Beams
Normal Stresses in Beams (Linearly Elastic Materials)Design of Beams for Bending Stresses
Shear Stresses in Beams of Rectangular Cross Section
Shear Stresses in Beams of Circular Cross Section
Shear Stresses in Webs of Beams With Flanges
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Weeks Chapters/Topics
Columns
14 Introduction
Buckling and Stability
Columns with Pin EndsColumns with Other Support Conditions
15 Strain Energy
Introduction
Strain Energy due to Direct Loads, Shear Force, Moment and
Torque
Application of Strain Energy
16 Springs
Introduction
Helical Springs (Tension Helical Spring, Compression Helical
Spring, Torsion Helical Spring, Spiral Helical Spring)
Leaf Springs
CLASS NOTES AND HANDOUTS
Additional class notes, study material, research papers, homework assignments, and general
course information will be distributed or presented at the start of each class period. It is the
students' responsibility to obtain a copy of these materials or information, from either a fellow
student or directly from the instructor, if for some reason they are absent from class.
POLICIES
COLLABORATION, PLAGIARISM AND CHEATING
Collaboration is encouraged, but duplication of work and group solutions for individual
homework, quizzes, mid-term exam, and final exam is considered plagiarism and cheating and
disciplinary action will exercised according to the School Policies. Zero credit will be given for
work that is identified as being copied or plagiarized with no reference made to the original
source. Copying of homeworks from one student to another is strictly prohibited.
The line between collaboration and plagiarism and cheating is not clear. A simple guideline to
use is when you discuss your work with other students, be sure to record your answer without
any collaboration. Plagiarism and cheating is most obvious when a student is asked to explain
their answer and two students turn in responses with the same awkward sentence structure or thesame grammatical errors. Similarly, identical diagrams and identical layouts of solution
procedures, solutions with missing steps or poorly arranged work also point to cheating.
DISCLAIMER
The instructor reserves the right to change and adjust the policies at any time before or during the
Academic term.