CE 515 Advanced Strength of Materials
Fall 2013
Tuesday/Thursday 11:45 am – 1:00 pm
327 Daniels Hall
Instructor:
Dr. Christopher P. Bobko
Assistant Professor
412 Mann Hall
e-mail: chris_bobko@ncsu.edu ** preferred
phone: 919-515-0481
Office Hours:
Tuesday/Thursday 2:00 pm – 3:00 pm for On Campus Students
Tuesday/Thursday 3:00 pm – 4:00 pm for Distance Students
Or by arrangement
Prerequiste:
An undergraduate course on Mechanics of Solids or Strength of Materials
Textbook:
A.P. Boresi, R.J. Schmidt, Advanced Mechanics of Materials, John Wiley
& Sons, Inc., 6th Edition
Objectives:
This course essentially bridges the gap between elementary strength of
materials and more advanced courses in structural analysis and structural
mechanics; provides background in the classical theory of elasticity
(mathematical stress analysis) and approximate theories of structural
analysis (engineering stress analysis; strength of materials); establishes the
relationship between the simplified and more general theories; enriches
skill for interpretation of analysis results.
Specifically, the learning outcomes are:
1. Analyze stresses and strains at a point: transform stresses and
strains, determine principal stresses and strains, principal
directions for 3D problems, and analyze strain rosette data.
2. Use elastic constitutive equations for 3D stresses and strains.
3. Use approximate theories of strength of materials for analysis of
stresses and strains of open and closed thin-walled section bars
subjected to torsion and unsymmetric bending.
4. Analyze curved beam, beams on elastic foundation, shear
deformation of beams, and stress concentration problems.
5. Perform failure analysis using classical plasticity theory and
fracture mechanics.
Website:
Moodle (downloadable lecture notes, homeworks, class materials, etc.):
http://wolfware.ncsu.edu
Engineering Online (lecture videos & in-class notes):
http://engineeringonline.ncsu.edu/onlinecourses/coursehomepages/FALL-2013/CE515.html
Grading:
Homework (weekly, drop lowest score)……………………..…..
Mid-Term Exam (Thu., Oct. 17, 11:45-1:00 pm) ……...……….
Final Exam (Thu., Dec. 12, 8:00-11:00 am, Daniels 327) …......
20 %
30 %
50 %
Distance education (DE) students will take the mid-term test and final exam on the same
days as the campus students. Please contact the instructor as soon as possible if any change
in the mid-term test or final exam schedules is needed.
Standard Grading Procedure:
97-100
87-89.9
77-79.9
67-69.9
A+
B+
C+
D+
93-96.9
83-86.9
73-76.9
60-66.9
A
B
C
D
90-92.9
80-82.9
70-72.9
<60
ABCF
Homework:
Will normally be assigned weekly and due EXACTLY in one week from
the day of assignment. Campus students will submit the HW to the
instructor and distance students will submit to homework_eol@ncsu.edu
before the class starts. Late submissions will not be accepted without a
valid reason. The dropped homework is intended to alleviate requests for
late homework submissions.
Disability Services:
Reasonable accommodations will be made for students with verifiable
disabilities. In order to take advantage of available accommodations, students
must register with Disability Services for Students at 1900 Student Health
Center, Campus Box 7509, phone 515-7653.
http://www.ncsu.edu/provost/offices/affirm_action/dss/students/
Academic Integrity: Students shall adhere to the university policy on academic integrity found in
the Code of Student Conduct on NCSU’s website: http://www.ncsu.edu/
policies/student_services/student_discipline/POL11.35.1.php. By signing
each homework assignment, exam, and other submission, the student attests
to the following university honor pledge: “I have neither given nor received
unauthorized aid on this test or assignment.” Any actions against this honor
pledge will be punished to the extent allowed by the university.
Course Evaluation:
Online class evaluations will be available for students to complete during the
last two weeks of class. Students will receive an email message directing
them to a website where they can login using their Unity ID and complete
evaluations. All evaluations are confidential; instructors will never know how
any one student responded to any question, and students will never know the
ratings for any particular instructor
Tentative Course Schedule:
Lecture Number
Date
Lecture 1
Thu, Aug 22, 2013
Lecture 2
Tue, Aug 27, 2013
Lecture 3
Thu, Aug 29, 2013
Lecture 4
Tue, Sep 3, 2013
Lecture 5
Thu, Sep 5, 2013
Lecture 6
Tue, Sep 10, 2013
Lecture 7
Thu, Sep 12, 2013
Lecture 8
Tue, Sep 17, 2013
Lecture 9
Thu, Sep 19, 2013
Lecture 10
Tue, Sep 24, 2013
Lecture 11
Thu, Sep 26, 2013
Lecture 12
Tue, Oct 1, 2013
Lecture 13
Thu, Oct 3, 2013
Lecture 14
Tue, Oct 8, 2013
Topic
Intro; review of
undergrad concepts
Fundamentals of
stress, strain and
deformation
HW #1 due
Constitutive
equation; linear
elastic theory
HW #2 due
Classical theory of
torsion
HW #3 due
HW #4 due
Unsymmetric
bending
Thu, Oct 10, 2013, Fall Break
Tue, Oct 15, 2013, Mid-Term Review/Catchup
Thu, Oct 17, 2013, Mid-Term Test
Lecture 15
Tue, Oct 22, 2013
Curved beam
Lecture 16
Thu, Oct 24, 2013
Curved beam
continued,
Pressurized cylinder,
Plate with holes
HW #5 due
Lecture 17
Tue, Oct 29, 2013
Lecture 18
Thu, Oct 31, 2013
Lecture 19
Tues, Nov 5, 2013
Lecture 20
Thu, Nov 7, 2013
Lecture 21
Tue, Nov 12, 2013
Beam on elastic
foundations,
Nonlinear beams,
Transverse shear on
beams
HW #6 due
HW #7 due
Plasticity theory
HW #8 due
Lecture 22
Thu, Nov 14, 2013
Lecture 23
Tue, Nov 19, 2013
Lecture 24
Thu, Nov 21, 2013
Beam Failure
HW #9 due
Fracture mechanics
Lecture 25
Tue, Nov 26, 2013
HW #10 due
Thanksgiving Holiday, Nov 28-29, 2013
Lecture 26
Tue, Dec 3, 2013
Fracture mechanics
Lecture 27
Thu, Dec 5, 2015
Review
Final Exam, Thu, Dec 12, 2013 (8:00 am – 11:00 am, Daniels 327)
HW # 11 due