22.322 Mechanical Design II Spring 2013
1. Basic Course Information
When & Where: M, W, & F 8:00-8:50 (section 201), 9:00-9:50 (section 202) in BA-214
Professor: Konstantine Fetfatsidis
E-mail: Konstantine_Fetfatsidis@uml.edu
TA: Javad Baqersad: Javad_Baqersad@student.uml.edu
Textbook: Design of Machinery (Fifth edition), Robert L. Norton, McGraw Hill, 2012
Prerequisites: Design of Machines I (22.321); Co-requisite: Mechanical Design Laboratory (22.202)
2. Course Description
This course is a continuation of 22.321 and concentrates on cam design, gear design, and power train design.
The major term project involves the design, analysis, manufacture, and dynamic testing of a cam having
specified characteristics. The lab uses computer aided design tools (CAD) and computer aided manufacturing
(CAM) to generate tool paths. Numerically controlled milling machines, and dynamic simulation codes are
applied. The lab provides an opportunity for students to work together on their project.
3. Lecture Topics
Introduction to Cam terminology
S V A J Diagrams
Single & Double Dwell Cams
Critical Path Motion
Cam Sizing & Manufacture
Design Considerations
Gear Trains
Gear Tooth Nomenclature
Interference & Undercutting
Gear Types (Simple, Compound, and Planetary)
Dynamic Systems
Dynamic Force Analysis
Balancing & Engine Dynamics
First & Second Order Systems
Control of First and Second Order Systems
4. Program Objectives and Outcomes
This course will support the mission of the undergraduate/graduate Mechanical Engineering program at the
University of Massachusetts Lowell by:
a) helping the student to comprehend analytical methods and data analysis techniques
b) making the student aware of current real world engineering problems
c) encouraging cooperative learning and verbal, written, and graphical communication
d) providing an understanding of the design of a mechanical systems that can be applied to real world problems
encountered throughout the career of the future engineer
5. Course Assessment
Grading:
Final
Project
2 Exams
Homework
Total
30%
20%
40%
10%
100%
(comprehensive)
(groups of 3 or 4)
(closed book/one sheet)
(Higher scores count 30%, lowest score counts only 10%)
(~weekly groups of 3 or 4)
The approximate grading scheme is as follows: A>93%, A->90%, B+>87%, B>83%, B->80%, C+>77%,
C>73%, C->70%, D+>67%, D>63%, D->60%. The final grade is subject to a scaled curve at the instructor’s
discretion.
Homework is due at the start of class on the assigned date. < 1 day late = 25% reduction, < 2 days late = 50%
reduction, < 3 Days Late = 75% reduction, < 4 Days Late = 100% reduction.
One missed exam without prior permission from the instructor will have the other exam average count as the
grade for the missed exam with a 15 point scaled penalty. For example: The class average for the first exam is
75 and a student misses the second exam but has a 95 (20 points higher) for the first exam. The class average
for the missed exam is a 60. The student will not receive a grade of 95, but instead will receive a grade of
60+20-15 = 65. This grading scheme will be strictly enforced!
6. Other Course Information
a) Informed questions are always welcomed. Class discussion is encouraged!
b) Computer programming assignments will be made. Students are expected to have a knowledge of a
programming language and access to some computing platform. MATLAB is strongly recommended!
Students are required to produce all drawings using a CAD package of their choice. Additionally, the use
of MathCAD, MATLAB, or other general purpose mathematical tools is encouraged for the completion of
the homework and design project calculations.
c) Academic dishonesty will receive a grade of zero and may result in immediate failure in the course and/or
dismissal from the university. Homework problems may be discussed with other students but the final
product must be your own work.
d) The use of cellular phones, laptops, or text messaging devices is not allowed in the classroom. Attendance
to class is strongly encouraged but not mandatory.
7. Academic Honesty
All students admitted to the University of Massachusetts Lowell have signed a statement of academic honesty
committing themselves to be honest in all academic work and understanding that failure to comply with this
commitment will result in disciplinary action.
This statement is a reminder to uphold your obligation as a student at the University of Massachusetts Lowell
and to be honest in all work submitted and exams taken in this class and all others.
8. Accommodations for Disabilities:
Students with disabilities who are requesting classroom accommodation must first register with the Dean of
Students Office. The Dean of Students Office will provide documentation to the student who must then provide
this documentation to the Instructor when requesting accommodations.