ME 130: Design of Planar Machinery (3 units)
CATALOG DESCRIPTION
Synthesis, analysis, and design of planar machines. Kinematic structure, graphical, analytical, and numerical analysis and synthesis. Linkages, cams, reciprocating engines, gear trains, and flywheels.
COURSE PREREQUISITES
104.
TEXTBOOK(S) AND/OR OTHER REQUIRED MATERIAL
Required textbook: R.L. Norton, "Design of Machinery: An
Introduction to Synthesis and Analysis of
Mechanisms and Machines," 3rd edition, McGraw-Hill Inc., 2004.
Instructor-created, animated Powerpoint presentations as reference.
COURSE OBJECTIVES
To introduce various techniques for mechanism synthesis and analysis;
to design and fabricate a mechanical device to perform a desired task;
to learn to work as a member of a design team.
DESIRED COURSE OUTCOMES
Upon completing the course, the students will be able to:
Understand the concepts of joints, linkages,
mechanism classifications, mechanical advantage,
minimum transmission angles and degrees of freedom;
synthesize a mechanism using graphical and analytical methods
for a given path, motion or function generation task;
perform kinematic analysis to obtain position,velocity, and
acceleration of a designed mechanism;
perform kinetic analysis to determine joint and link forces and
calculate the input torque needed to power a mechanism;
use cam and follower in designing mechanisms;
understand the concept of team work and team dynamics;
obtain hands-on experience in taking a design concept through
building the prototype and testing it to meet certain specifications.
TOPICS COVERED
Introduction to mechanisms, kinematics pairs, and degrees of freedom.
Four-bar mechanism, mechanism classification, transmission angle, mechanical advantage, toggle positions, and Grashoff mechanism.
Graphical synthesis: motion generation mechanisms, two and three positions with and without prescribed fixed pivot points.
Graphical synthesis: adding Dyad to mechanisms, quick-return mechanisms
Graphical synthesis: path generation mechanism (three positions) with and without timing.
Graphical synthesis: function generation mechanisms.
Analytical synthesis: complex polar notation, closed loop vector equation.
Analytical synthesis: standard Dyad equation, motion generation mechanisms for two to five positions.
Analytical synthesis: path and function generation mechanisms, Chebychev spacing.
Analytical analysis: using complex polar notation to obtain position, velocity and acceleration.
Graphical analysis: instant center and polygon methods.
Static and dynamic forces on mechanisms, graphical and analytical methods (matrix method), torque requirement.
Cam design: cam and follower type, displacement, velocity, acceleration and jerk profiles, high speed cams.
Static and dynamic balancing of mechanisms.
CLASS/LABORATORY SCHEDULE
Three hours of lecture and one hour of laboratory per week.
CONTRIBUTION OF THE COURSE TO MEETING THE
PROFESSIONAL COMPONENT
Students apply math, science and engineering knowledge to design
and analyze mechanical devices.
Students gain hands-on experience in designing, building and
testing a mechanical device to meet certain specifications.
This provides our
students with an insight to the practical aspects of design.
Students use various computer tools for technical drawings,
modeling, simulation and analysis; parametric modelers
such as SolidWorks and ProE, Working Model for preliminary design.
Students prepare a technical report and make a presentation.
Design project provides an opportunity for team work and
organizing the design phases and budgeting the time
effectively to meet design deadlines.
RELATIONSHIP OF THE COURSE TO ABET PROGRAM OUTCOMES
An ability to apply knowledge of mathematics, science, and engineering;
an ability to design a system, component, or process to meet desired needs;
an ability to identify, formulate, and solve engineering problems;
an ability to communicate effectively;
a knowledge of contemporary issues;
an ability to use the techniques, skills, and modern engineering tools necessary
for engineering practice.
ASSESSMENT OF STUDENT PROGRESS TOWARD COURSE OBJECTIVES
Weekly homework assignments, some with open-ended problems.
Two midterm exams and a final exam.
Semester design project.
PERSON(S) WHO PREPARED THIS DESCRIPTION: K. Youssefi
