UNLV Department of Mechanical Engineering
Fall Semester 2006
Course
Outline Instructor Contact Info Course
Objectives Grading Prerequisites
Homework
Guidelines Office Hours
Cheating
Disability Resource Center
Design Project Description Project
Ideas Project Deadlines Design Process
***STARTING FALL 2006***
The
Mechanical and Civil Engineering Departments will offer their own versions of
Mechanics of Materials.
ME
students should sign up for ME 302 and ME302L.
CEE
students should sign up for CEE 370 and CEE 370L.
CEE 370 Engineering Mechanics of Deformable Bodies
UNLV Department of Civil and Environmental Engineering
Professor:
E-Mail: asaid@egr.unlv.edu
Days/Time/Room: TR /
11:30 AM 12:45 PM / CBC C-120
Additional ME 302
Course Materials
ME 302 Materials Mechanics Introductory Lecture
Load, Shear, & Moment Relationships
|
Dates |
Ch |
Sec |
Topics |
Homework
Due Dates |
Proposed
Lab Plan |
|
T
8/29 R
8/31 |
1 1 |
1-6 7-10 |
Concept of Stress, Normal Stress Components of Stress |
Send an
e-mail to Dr. OToole so he
can create a class list. |
No Lab |
|
T
9/5 R
9/7 |
1 2 |
11-13 1-8 |
Safety Factors Stress-Strain curves, Axial Loading |
|
Intro and Safety |
|
T
9/12 R
9/14 |
2 2 |
9-10 11-15 |
Static Indeterminacy Poissons Ratio, Shearing Strain |
|
1: Statistics and Uncertainty |
|
T
9/19 R
9/21 |
3 3 |
1-4 5-8 |
Torsion: Stresses, Angle of Twist Statically Ind. Torsion, Power |
Ch. 2:
5, 13, 18, 27, 37, 44, 51, 66, 72, 81 |
2: Strain Gage
Bonding |
|
T9/26 R
9/28 |
4 |
1-5 |
Bending: Stress & Deformation |
Ch. 3:
2, 14, 28, 42, 50, 59, 68, 75, 82 |
2: Strain Gage
Bonding |
|
T
10/3 R
10/5 |
4 5 |
6-12 1-2 |
Bending: Eccentric Axial Loading Shear & Bending Moment Diagrams |
Project
Title |
3: Tensile Testing |
|
T
10/10 R
10/12 |
5 5 |
3 4 |
Load, Shear, &
Moments Design of Beams for
Bending |
Ch.4: 7, 12, 18, 35, 46, 51, 103, 105 |
3: Tensile Testing |
|
T
10/17 R
10/19 |
6 6 |
1-3 4-6 |
Shear Stresses in Beams Shear in Narrow Rectangular Beams |
4: Poissons Ratio |
|
|
T
10/24 R
10/26 |
6 7 |
7 1-3 |
Thin Walled Members Transformation of Plane Stress |
|
5: Torsion |
|
T
10/31 R
11/2 |
7 |
4-6 |
Mohrs Circle for Plane Stress |
|
6: Bending
Modulus |
|
T
11/7 R
11/9 |
8 8 |
1-2 3 |
Principal Stresses
in Beams & Shafts Stresses Under Combined Loading |
|
7: Beam Deflections |
|
T
11/14 R
11/16 |
8 9 |
3-4 1-3 |
Stresses Under Combined Loading Equation of Elastic Curve |
|
Projects |
|
T
11/21 R
11/23 |
9 |
4-5 |
Load-Deflection Relationship Thanksgiving |
No Class |
Projects |
|
T
11/28 R
11/30 |
9 |
7-8 |
Statically Indeterminate Beams |
Projects |
|
|
T
12/5 R
12/7 |
10 10 |
1-4 1-4 |
Eulers Column Formula Columns: Centric Loading |
Design
Project Report Due |
8:
Column Buckling |
|
R
12/14 |
|
|
Final Exam 10:10 AM |
|
|
|
Professor: |
Brendan
J. O'Toole, Ph.D. |
|
Office: |
TBE
B122 |
|
Phone: |
895-3885 |
|
E-Mail: |
|
|
Days/Time/Room: |
TR
/ 11:30 AM 12:45 PM / MPE 232 |
|
Text: |
Mechanics
of Materials, Beer, Johnston, & DeWolf, McGraw Hill, 2006 |
|
OToole Website: |
The overall goal of this course is to learn how to design and analyze simple structures for predetermined strength and deformation requirements. Your learning objectives for the semester are to:
1. Learn the Vocabulary. It is important
to read the text carefully. There are many new terms to learn and many subtle
differences between the definitions of words. For example, you will learn about
half a dozen new variations to the meaning of the word stress.
2. Improve Your Skill at Drawing Free Body
Diagrams. Free body diagrams were used in your Statics class to model real
physical problems with simplified sketches. This is a very important skill that
is used to start and set up most Mechanics of Materials problems.
3. Learn About Material Behavior. All
materials deform when loaded by mechanical forces or temperature changes. You should
learn the basic principals of material behavior and some of the failure
mechanisms of materials and structures. You should also learn the important
properties of the most common materials used for engineering structures,
machines and equipment.
4. Learn How To Solve Mechanics Problems.
This is the largest part of the class. The solution procedure for most
mechanics problems involves one or more of the following tasks:
A statics analysis of a component to find the
internal reactions (forces & moments)
Determine stresses and strains in a component
based on internal reactions
Find the deformation of the component
Compare calculated values of stress &
deformation with known acceptable values
5. Improve Your Engineering Design Skills.
A semester-long design project is also part of this course. All students will
be part of a 3-4 member team working on the design of a realistic structure or
mechanism. You will apply the analysis skills learned during the semester as
part of the entire design project.
The following UNLV courses (or their
equivalent) are required as prerequisites: EGG 206 Engineering Mechanics I
(Statics), MAT 182 Calculus II and PHY 180 Physics I.
Homework is due
at the beginning of class on the
dates highlighted in bold on the outline. For example, homework # 1 is due on
Thursday, September 7. Homework assignments and due dates may change and will
be announced in class. Sloppy or
unprofessional work will be returned ungraded. Late Homework Will Not Be Accepted because solutions will be posted
soon after the due date. Solutions will be posted on the MEG 302 Course
Website. A password will be provided in class to allow access to the HW
solutions.
Submit
your assignments on 8.5 x 11 paper. Be sure to include your name at the top
of the first page. Include the following information for each problem:
Most of the problems will require a sketch of
the problem along with one or more Free Body Diagrams showing the applied loads
along with the external and internal reactions.
Show all of your work. Make reference to
equations in the book if you do not want to repeat them.
Draw a box around your final answer or
answers. You will not receive credit for a correct answer if you have not shown
the work.
Each
problem will be graded on a scale from 0-10. The homework counts as a
significant percentage of your final grade so do not blow it off. Some of the
problems may take several hours so manage your time accordingly. You are
encouraged to help each other figure out the problems but do not copy each
other's work.
There
are 82 assigned homework problems throughout the Fall 2006 semester for a total
of 820 possible points. Your homework grade will be calculated using 750 points
as the maximum so there are 70 extra credit homework points available for the
semester.
The
homework is assigned for three main reasons:
To elaborate on material discussed in class and in the text
To provide practice in solving mechanics problems
To assess your understanding of the material
OToole
Office Hours Spring 2006:
Monday: 10 - 2
Tuesday: 2 - 4
Wednesday: 10 - 2
Thursday: 1:30 2:30
Friday: 2 - 4
The
best way to meet with me is to send e-mail to set up an appointment. I check my
e-mail throughout the day and should respond quickly. I can be reached at:
Office Phone: 895 - 3885
E-mail: bj@me.unlv.edu
Your grade for the course will be based
on weekly homework assignments, three in-class exams, a group design project
and a comprehensive final exam which are weighted as shown below:
|
In-Class
Exams (3) |
Homework |
Design Project |
Final Exam |
|
45 % (15 % each) |
15 % |
10 % |
30 % |
The letter grade cut-offs vary slightly from
semester to semester. The table below shows an approximate correlation between
final percentage grade and final letter grade.
|
88 - 100% |
78 - 87% |
73 - 77% |
68 - 72% |
58 - 67% |
50 - 57% |
< 50% |
|
A |
A- to B+ |
B |
B- to C+ |
C |
D |
F |
Copying
each other's homework assignments is considered cheating. Any form of cheating on homework or an
exam will result in a failing grade for the course. All of the assigned
homework problems have answers in the back of the book. Use this information to
check your work. DO NOT PUT THE ANSWER FROM THE BACK OF THE BOOK AT THE END
OF YOUR PROBLEM IF YOUR WORK DOES NOT SUPPORT THIS ANSWER OR YOU WILL GET ZERO
POINTS FOR THE ENTIRE ASSIGNMENT.
This will be a difficult class.
Plan to spend 6-10 hours per week on homework assignments.
Plan to be completely stumped on some of the
problems.
Plan your work periods at least 2 days before the due date.
Plan to have questions after your first
attempt at solving the homework problems.
Write
your questions down when
you think of them, Ask for help
until you understand the problem.
If you have a documented disability that
may require assistance, you will need to contact the Disability Resource Center
(DRC) for coordination in your academic accommodations. The DRC is located in
the Reynolds Student Services Complex room 137. Their phone number is 895-0866.
Engineers Edge
http://www.engineersedge.com/mechanics_material_menu.shtml
What is
eFunda?
|
http://www.efunda.com/formulae/formula_index.cfm
Material Properties (MATWEB)
http://www.matweb.com/index.asp?ckck=1
Source of Materials
Unit Conversion
http://www.digitaldutch.com/unitconverter/
Scope of Project: The design project provides you with an opportunity to apply the topics learned in class to any mechanics oriented design problem of interest to you and your teammates. You and your team will be responsible for:
Selection of Project: You may choose any project provided it is:
Submit list of group members
and project title: September
28, 2006
Send to bj@me.unlv.edu,
include all student e-mail addresses along with the title of the project.
Final written report due by: Friday,
December 8, 2006
Report: The
written report will be graded on its effective use of the engineering design
process, mathematical correctness, grammar, spelling, style of writing,
clarity, and brevity, as well as other criteria usually applied to a written
report. Send final report to bj@me.unlv.edu,
as an attached MS WORD file. If you are not using MS WORD, see instructor. Hard
copies of reports will NOT be accepted. All figures, drawings, equations, etc.
must be imported into the report document. You can scan handwritten equations
or use Equation Editor, MathType, MathCad, or a similar tool for equations.
The following outline is a brief overview of the design process. You should be familiar with the design process from the required Introduction to Engineering Design course. The presentation and report for your project should include
|
Trampoline |
Spent Nuclear Fuel Rack |
Slide |
4x4 Tow Winch |
|
|
Mr. Flexy Snowboard |
Water Couch |
|
|
Neat Note Book |
Interstate Median |
Pliers |
Indestructible Pita |
|
Weight Lifting Bar |
Compact Folding Stadium Seat |
Monkey Bars |
Pandora's Safe |
|
Traffic Signal |
Roll Cage for a Dune Buggy |
Spring Board |
Computer Desk |
|
PVC Sprinkler System |
Residential Piping System |
Wheelchair |
Computer Chair |
|
Portable Basketball Hoop |
Space Saving Hammock |
|
Automobile Seat |
|
House Patio Cover |
Durable Bag for carrying Lathes |
Bus Stop Bench |
Artificial Limb |
|
Work Bench |
Adjustable Folding Table |
TV Stand |
Engine Hoist |
|
|
Automatic Adjustable Pencil |
Freeway Sign |
Aquarium Base |
|
TV Tray |
Automatic Adjustable ladder |
Stop Sign |
Children's Playhouse |
|
High Chair |
Automatic Adjustable Cane |
Trebuchet |
Car Jack |
|
Computer Stand |
Fishing Pole |
Gazebo |
Glasses |
|
Book Shelf |
RC Car Stand |
Swing Set |
Bike Rack |
|
3 Leg Table |
RC Car Chassis |
Diving Board |
Small Porch |
|
Chair (Stool) |
Guitar |
Retaining Wall |
Closet Shelving System |
|
Staircase Design |
Airport Wind Guard |
Bicycle Frame |
Pull Trailer (for a car ) |