CE 206 - Strength of Materials
Lecture # 1
Dr. Abdulrahman K. Yussef
Civil Engineering Department
Today…
v Introduction
v Syllabus
v Homework
v Course Objectives
v Means of Communication
v Email Protocol
Be a Pro in Everything You Do!
What makes a professional?
•Make expertise your specialty
•Do more than expected
•Do what you say and say what you can do
•Communicate effectively
•Follow exceptional guiding principles
•Praise your peers not yourself
•Share your knowledge
•Be respectful
•Say thank you
Syllabus Key Points:
v Grade Distribution
v Grade Scale
v HW Guidelines
v Attendance Policy
v Makeup Policy
v Academic Integrity
v Support Services – Office Hours
v COURSE OBJECTIVES
Grading Policy
ØAttendance and Participation
5%
ØLab and Reports
10%
ØHomework and Quizzes (project)
15%
ØMidterm Exam
30%
ØFinal Exam
40%
Week
1
Course Outline and Schedule
2-3
4-5
6
7
7
8
9-10
11-12
13
14-15
Final
Topics
-Introduction to Strength of Materials and the
importance of the subject.
- Review of Statics.
Introduction; Equilibrium; Stress; Normal Stress;
Average Shear Stress; Bearing Stress; Allowable Stress;
Introduction to Design.
Introduction; Equilibrium; Stress; Normal Stress;
Average Shear Stress; Bearing Stress; Allowable Stress;
Introduction to Design.
Shear & Bending Moment Diagrams–Method of
Summations; Shear & Bending Moment Diagrams–
Graphical Method; Bending Stresses in Straight Beams;
The Flexure Formula.
Def. of Strain, Stress-Strain Diagrams
Hooke’s Law; Material Behavior; Poisson’s Ratio.
Midterm
Exam (27 February)
Def. of Strain, Stress-Strain Diagrams
Hooke’s Law; Material Behavior; Poisson’s Ratio.
Deformation of Axially Loaded Members; Statically
Indeterminate Axially Loaded Members; Thermal
Stresses and Thermal Strain; Stress Concentrations;
Stress Components Under General Loading;
Generalized Hooke’s Law.
Deformation of Axially Loaded Members; Statically
Indeterminate Axially Loaded Members; Thermal
Stresses and Thermal Strain; Stress Concentrations;
Stress Components Under General Loading;
Generalized Hooke’s Law.
Deformation of Axially Loaded Members; Statically
Indeterminate Axially Loaded Members; Thermal
Stresses and Thermal Strain; Stress Concentrations;
Stress Components Under General Loading;
Generalized Hooke’s Law.
Torsion of Circular Shafts; Power Transmission Shafts
and Gears (Continued); Angle of Twist; Statically
Indeterminate Shafts; Torsion of Solid Non-Circular
Sections; Twisting of Thin-Walled Closed Sections
Final Exam
(Comprehensive)
Chapter
1
1
1
6
2&3
2&3
4&10
4&10
4&10
5
Learning Addressed by the Course:
• Identify types of stresses, strains and corresponding stress-strain relations
for different materials. Define the concept of safety factor and its
application. Observe the practices of occupational safety and professional
ethics.
• Calculate normal stresses due to axial loads and bending moments; shear
stresses due to torsional moment and shear forces. Determine the
corresponding principal stresses.
• Appreciate the subject as an essential structural design tool.
• Apply analytical skills to practical problems; problem analysis and problem
solving.
Homework
Joe Smith
CON 221
Centroids
PROBLEM 1
v Homework must be professional
v Homework must be properly formatted
v Pencil only
GIVEN:
FIND: Identify the centroid of the object.
SOLUTION:
1.
Break object into simple shapes
2.
Create centroid
__ __table
__ __
3.
Find Area, X, Y, XA, YA
4.
Double check
“+” and “-“
__ __
5.
Sum A, XA, YA
6.
Identify Centroid of the object
7.
Plot centroid on figure to verify accuracy
A
v Use a straight edge ruler
B
Shape Area
__
X
__
Y
__
XA
__
YA
10
3.0
5.0
+30
+50
B
50
3.0
2.0
+150 +100
Sum
60
A
v All answers should be boxed
+180
+150
+180/60 = 3.0
+150/60 = 2.5
__
X = 3.0
__
Y = 2.5
Group 2
Quizzes
v Announced and unannounced quizzes
If You Miss Class
Step 1 – Review syllabus to see what you missed.
Step 2 – Talk to other students in class. Talk to more than one
person!
Step 3 – Contact me (via email).
Mandatory Tools
vCourse textbook
vNotebook
vCalculator
vMechanical Pencils (2)
vLarge Eraser
vEngineering Paper
vRuler
Additional Help
vOffice hours
§Monday (10:45 am – 12:45 pm); Wednesday (11:00 am – 12:30 pm)
Main Textbook
R. C. Hibbeler, "Mechanics of Materials,” 10th SI
edition, Prentice-Hall, Pearson Education, 2018.
Means of Communication – Blackboard
Blackboard
Means of Communication – Taibah U Email
The proper way to communicate with
the course instructor is via your
Taibah University Email
Email Protocol
1. Include a clear, direct subject line.
When sending e-mail to the instructor, please begin the “Subject:” of the message with the following:
CE206 (section 1):
◦ Example: CE206 (section 1): Official Medical Excuse
2. Use a professional email address.
3. Think twice before hitting 'reply all.'
4. Use professional salutations.
5. Use exclamation points sparingly.
6. Proofread every message.
7. Double-check that you've selected the correct recipient.
8. Keep your fonts classic.