1. MET
301: Analysis & Design of Machine Elements-I
2. Credits
and contact hours:
3 and 4 hours/week
3. Instructor’s
or course coordinator’s name:
Dr. A. K. Sengupta
4. Text book, title, author, and
year: Design of Machine Elements, 8th
edition, Spotts, Shoup
& Hornberger, Prentice-Hall, 2004.
a. Other supplemental materials:
Analysis & Design Of Machine Elements – I, Summary Of Topics &
Formulae, Sengupta A. K.. Laboratory handouts, MD
solids software
5.
Specific course information
a. Brief
description of the content of the course (catalog description): The principles of strength
of materials are applied to mechanical design. Topics include theory of
failure, stress concentration factors and fatigue, the design and analysis of
shafts subjected to static and dynamic loadings, and critical speed of a
rotating shaft. The laboratory experience is integrated within the course.
b. Prerequisites: MATH 238, MET 236, MET 237, CS106.
c. Required,
elective, or selected elective course in the program: Required
6.
Specific goals for the course
a.
Course Outcome (CO):
By the end of the course
students should be able to:
1. Determine internal stress and strain developed given external loads on machine members.
2. Determine the principle normal and maximum shear stresses and strains from the interaction of bi-axial and tri-axial normal and shear stresses.
3. Determine the geometric and fatigue stress concentration factors and select and apply theories of failure to determine the factor of safety of a machine parts under combined steady and cyclic load.
4. Apply theories related to design for finite life.
5. Design rotating shafts, keys and couplings.
6. Theoretically and experimentally determine stress and strain of a shaft loaded in torsion and bending.
7. Write
an effective laboratory report according to acceptable criteria.
b.
Student outcomes:
The Course
Outcomes support the achievement of the following MET Student Outcomes and TAC
of ABET Program Outcome requirements:
Student Outcome a - an ability to select and apply the knowledge, techniques, skills, and modern tools of the discipline to broadly-defined engineering technology activities;
Related CO – 1 to 5
Student Outcome b - an ability to select and apply a knowledge of
mathematics, science, engineering, and technology to engineering technology
problems that require the application of principles and applied procedures or
methodologies;
Related CO – 1 to 5
Student Outcome c - an ability to conduct standard tests and measurements; to conduct, analyze, and interpret experiments; and to apply experimental results to improve processes;
Related CO – 6 & 7
Student Outcome e - an ability to function effectively
as a member or leader on a technical team;
Related CO – 7
Student Outcome f - an ability to identify, analyze, and solve broadly-defined engineering technology problems;
Related CO – 1 to 5
Student outcome g - an ability to apply written, oral, and graphical communication in both technical and nontechnical environments; and an ability to identify and use appropriate technical literature;
Related CO – 7
7.
Brief list of topics to be
covered
Static equilibrium, Hook’s Law, Normal stress-strain-deformation, Statically Indeterminate Problems in Axial Loading. Transverse loading, Shear force and Bending moment diagram, Bending stress, Moment of inertia, Transfer of axis, Transverse shear stress, Super-imposition of bending and axial stresses. Design of columns, Torsion of circular sections. Mohr Circle, 3D stress, Strain due to 3D stress, Failure theories, Stress concentration factors, Cyclic loading, Design for fatigue stress, Design for finite life, Combined static and cyclic load for finite life, Miner’s equation. Design of shaft for fluctuating load, Shaft with bending loads in two planes, Design of keys and coupling. Deflection and slope of beam, Critical speed of a rotating shaft, Shaft on three supports, Deflection & slope of non-uniform shaft – energy method, Shaft with non-circular section, Shafting materials.
MET - 301-102: Spring 2018: ANALYSIS & DESIGN OF MACHINE ELEMENTS-I
Monday: M: M:
545PM - 740PM, 750PM - 945PM, room #ME 214
Instructor: Dr. Arijit
Sengupta, Office: GITC 2102, telephone:
(973) 642 7073; email: sengupta@njit.edu, website: http://web.njit.edu/~sengupta
Office Hours:
Monday 2 pm to 4 pm, Wednesday 11 am to 1 pm. You may make an appointment
by clicking here. For other times, email me or take a chance by dropping by
my office.
Textbook: Spotts,
Shoup & Hornberger:
Design of Machine Elements, Prentice-Hall, 8th edition. ISBN 0-13-048989-1 (Collection of Typos in textbook)
Reference materials Summary
of topics and formulae
– you can print it out for your easy reference
http://www.mdsolids.com/ - An award winning software
Course Outline
|
Class |
Topic |
Textbook chapter |
Homework problems |
|
#1 Jan 22 |
Static
equilibrium, engineering material, tension and compression in axial loading,
statically indeterminate problems. Examples |
1: 1-6 |
Solution |
|
#2 Jan. 29 |
Center of gravity, bending of beams, moment of inertia,
transfer of axis, principle of superimposition of bending and axial
stress |
1: 7-11 |
Solution |
|
#3 Feb. 5 |
Lab #1 Wheatstone
bridge Cover page Deflection of beam, shearing stress, and transverse
shearing stress in beams |
1:13, 15, 16 |
Prelab
Quiz Solution |
|
#4 Feb. 12 |
Shear
and bending moment diagrams Test 1 |
1:17 |
|
|
#5 Feb. 19 |
More
on shear and bending moment diagrams |
1:18 |
Solution |
|
#6 Feb.
26 |
Stress
in any direction, Mohr circle, 3D
stress Stresses
and deformation in two directions Mohr
circle example- Youtube video |
1:19-24 |
HW5:
Chapter 1: 87, 88, 98 & 102 Solution |
|
#7 Mar. 5 |
Stress-strain
diagram |
2: 1-4 |
TBA |
|
#8 Mar. 19 |
Design for cyclic loading, Soderberg, Goodman and modified Goodman’s equation Design for finite life – Basquin’s equation, Combined loading and Miner’s
equation. |
2:5,6 |
HW6:
Chapter 2: 13, 24, 28, 45 Solution |
|
#9 Mar. 26 |
Test 2 Strain
in two directions (November 6 Last Day to Withdraw) |
1:22 |
|
|
#10 Apr. 2 |
Torsion
of circular shaft, maximum static shearing stresses, and design
of shaft for fluctuating loads.
Lab#2 Strain measurement |
3: 1-4 |
HW7 Solution Prelab
quiz |
|
#11 Apr. 09 |
Bending
in two planes, shaft on three supports |
3: 5-9 |
HW8:
Chapter 3: 13, 26, 27 & 28. Solution |
|
#12 Apr. 16 |
Critical
speed of a rotating shaft Test 3 |
3:11 |
TBA |
|
#13 Apr. 23 |
Deflection
& slope of non-uniform shaft Energy
method |
3: 12,13 |
TBA |
|
#14 Apr. 30 |
Torsion
of non-circular shaft, shafting materials. Review |
3: 14-19 |
|
|
#15 |
FINAL
EXAM |
|
|
Grading
Three tests–42%, Final Exam
–30%, Laboratory –14%, Homework – 14%
One lowest test score will be
dropped in determining the overall test score.
Overall percent: A: 90 or
above; B+: 85-89; B: 80-84; C+:75-79; C: 68-74; D: 60-67;
F: 59 or less.
Homework and quiz
Attendance
Class attendance is mandatory.
Please be on time for classes, late entry distracts the whole class. Good
attendance may help in improving your grade. If you miss any
laboratory, test or final exam without prior permission, you will receive zero
credit for that item. In extraordinary circumstances, when such prior
permission is impossible to obtain, I expect you to contact me at your earliest
for rescheduling your laboratory, test or final exam. I scrutinize your excuse
before rescheduling.
Laboratory
· Your safety and safety of those around you are of prime
importance. Efforts have been made to reduce the hazard in the lab
as much as possible. Follow all posted safety policies.
· All lab reports should written using
MSWord. Reports are graded on your presentation. Is the material
presented in a logical way? Can all the required results be found with ease?
Are the results discussed intelligently in a good technical language? Your depth of understanding, discussion and
conclusion will carry more weight than production of right numerical answer.
· Due
dates for laboratory reports will be announced in the
class. Laboratory reports handed in after the due date will incur
ten percent deduction in marks for lateness. Laboratory reports late more than
two weeks will not be accepted.
University
Policy on Academic Integrity will be upheld, and any violation will be brought to the attention of
the Dean of student