Syllabus for ME3213
Mechanics of Materials
Spring,2012
Course Information
Instructor:Dr.Maurizio Porﬁri
Email:mporﬁri@poly.edu
Oﬃce:RH507
Phone:7182603681
Oﬃce Hours:Thursday 12:0012:55
Lecture:Tuesday 11:0012:25 RH200
Thursday 11:0012:25 RH200
Webpage:My Poly
Course Goals
Mechanics of Materials is a ﬁrst course in the understanding of solid body mechanics.It is essential for
the prediction of structural failure in any industry application.This course is the prerequisite to Machine
Design and any further study in deformable mechanics.The objectives of the course are to:
Understand the concepts of stress and strain,normal stress and strain,shear stress and strain,general
state of stress,and design of simple connections
Understand stress analysis,materials’ behavior,constitutive relationship,Hookes law,stress concen
tration,St Venant principle,transformation equations,and Mohrs circle
Learn about axially loaded members,torsion,change of length,angle of twist,transmission of power
by shafts,and statically indeterminate structures
Understand bending,shear and moment diagrams,shear force,transverse loading relationship,and
ﬂexure formulas
Learn the concepts of deﬂection of beams,diﬀerential equation of deﬂection curve,method of super
position,and Castiglianos theorem
Prerequisites
MT2813,ME2213,MA2132;and ME3211 (corequisite)
Required Text
(BJDM) Beer,F.P.,Johnston,E.R.,DeWolf,J.T.,and Mazurek,D.F.,Mechanics of Materials,Mc Graw
Hill,2011,6th edition
Homework
Homework will be assigned periodically.However,homework will neither be collected nor graded.Students
are responsible to do homework on their own.Homework solution will be presented in class.
1
Exams
There will be two midterm exams and one ﬁnal.The exams will be administered in class and will test the
student’s comprehension and ability to apply material learned in class and through assignments.All tests
are inclass,closed book,closed notes.One formula sheet will be allowed for the exams and the ﬁnal.During
the exam,before beginning to solve assigned problems,students should brieﬂy restate the problem and list
the data given.Also,students should list the important concepts and formulae used to arrive at the ﬁnal
solution along with detailed work.Every page of every exam submission should have the student full name
and section number.Illegible work and loose sheets will not be graded.Students must complete the exam
on their own.If a student cannot attend an exam due to a medical condition,certiﬁed by a doctor,he/she
must notify the instructor in advance.Unexcused absence from an exam will result in a grade of 0 for that
exam.
Grading
This is a 3 credits course.
Policy
Homework:0%
Midterm Exam:30%
Midterm Exam:30%
Final:40%
Letter Grade Policy
A:90+,A:87+,B+:83+,B:80+,B:77+,C+:73+,C:70+,C:67+,D+:63+,D:60+,F:<60.
Extra credit
There are no opportunities for extra credit.The grading policy allows for a “bad score”.
Class attendance and absences
There are no formal requirements for attendance,and there is no direct penalty for missing class.Students
are strongly encouraged to attend class since some course material may only appear in lectures.Students
that miss class are responsible for obtaining class notes from a classmate.
Honor system
The honor system is in strictly force for this course.It is assumed that all work submitted by a student is
done so under the honor system code.The ﬁnal exam must be completed individually.
ABET ak criteria compliance
a
b
c
d
e
f
g
h
i
j
k
p1
p2
ME3213
X
X
X
X
X
X
2
(a) an ability to apply knowledge of mathematics,science,and engineering
(b) an ability to design and conduct experiments,as well as to analyze and interpret data
(c) an ability to design a system,component,or process to meet desired needs
(d) an ability to function on multidisciplinary teams
(e) an ability to identify,formulate,and solve engineering problems
(f) an understanding of professional and ethical responsibility
(g) an ability to communicate eﬀectively
(h) the broad education necessary to understand the impact of engineering solutions in a global and
societal context
(i) a recognition of the need for,and an ability to engage in lifelong learning
(j) a knowledge of contemporary issues
(k) an ability to use the techniques,skills,and modern engineering tools necessary for engineering practice.
(p1) an ability to apply principles of engineering,basic science,and math to model,analyze,design and
realize physical systems,components or processes
(p2) an ability to work professionally in both thermal and mechanical systems areas
Tentative Lecture Schedule
Lecture
Reading
Topic of the day
Lecture 1 (T)
24/1/12
110,3032,and 5466
Course overview,review of statics,and
introduction to normal stress and constitutive
behavior
Lecture 2 (TH)
26/1/12
2630
Shearing stress and 3D stress (HWassignment)
Lecture 3 (T)
31/1/12
7881 and 98103
Shearing strain,statically indeterminate
problems,and in class solution of homework
Lecture 4 (TH)
2/2/12
8287,9394,and 694700
HWsolution and problems involving temperature
changes,Poisson’s ratio,and strain energy
Lecture 5 (T)
2/7/12
113120
SaintVenant’s principle,stress concentration,
plastic deformation (HWassignment)
Lecture 6 (TH)
2/9/12
142162
Torsion of shafts
Lecture 7 (T)
2/14/12
HWsolution
Lecture 8 (TH)
2/16/12
163178,701702
Statically indeterminate shafts,design of
transmission shafts,and strain energy for
shearing stress (HWassignment)
Lecture 9 (T)
2/21/12
HWsolution and review
Lecture 10 (TH)
2/23/12
Midterm exam
Lecture 11 (T)
2/28/12
222236
Solution of midterm exam and pure bending
3
Lecture
Reading
Topic of the day
Lecture 12 (TH)
3/1/12
242245,270272,279284
Unsymmetric bending,general case of axial
loading,and beams made of several materials
(HWassignment)
Lecture 13 (T)
3/6/12
316323
HWsolution and shear and bending moment
diagrams
Lecture 14 (TH)
3/8/12
329340,
Equilibrium equations and design of beams for
bending (HWassignments)
Lecture 15 (T)
3/20/12
701702,716718
HWsolution,bending energy,and impact loads
Lecture 16 (TH)
3/22/12
382400
Shearing stress in beams (HWassignments)
Lecture 17 (T)
3/27/12
438458
HWsolution and transformations of stress and
strain
Lecture 18 (TH)
3/29/12
462466,478480
General state of stress and stress in thinwalled
pressure vessels (HWassignment)
Lecture 19 (T)
4/3/12
467472,514522
Failure criteria and principal stresses
Lecture 20 (TH)
4/5/12
467472,514522
Solution of HWassignment
Lecture 21 (T)
4/10/12
486496
Review
Lecture 22 (TH)
4/12/12
Midterm exam
Lecture 23 (T)
4/17/12
550561
Deﬂection of beams (HWassignment)
Lecture 24 (T)
4/19/12
561570,580589
Statically indeterminate systems
Lecture 25 (TH)
4/24/12
737744
Homework solution and Castigliano’s theorem
Lecture 26 (T)
4/26/12
Review
4
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