ME 412/512
Design of Mechanisms
Term: Winter 2013
Schedule:
Lecture: TR 1600-1720
Lab: T 1730-1920
Location:
Lecture: GLSN 100
Lab: Rogers 228
Course Credits: 4
Instructor: David Ullman
email: ullman@engr.orst.edu
phone: 541-754-3609
office: 314 Rogers
office hours: Tuesday 9:30 – 4:00 and by appointment
TA John Fields: Office hours: Wed 1:00 – 3:00
fieldsjo@engr.orst.edu
Put ME412 or ME512 in the header of any emails.
Grading: 1000 course points
Homework: 200 pts. (8 weeks @ 25 ea.)
Midterm Exam: 200 pts.
Projects: 300 pts
Final Exam: 300 pts.
Prerequisites: ME 317
Texts (required):
Design of Machinery, Robert L. Norton, 5th edition, McGraw Hill 2012
(ISBN 978-0-07-352935-6)
COURSE DESCRIPTION
Analysis and study of the function, classification, position, velocity, and acceleration of multi-element mechanisms.
Synthesis of linkages for specified multiple point paths, quick return, dwell, and straight-line motion. The lecture will
instruct students in the kinematic analysis and synthesis of linkages through the use of theory and software packages. The
laboratory will familiarize students with a modern mechanism design and animation software package.
TOPICS
1.
2.
3.
4.
Gruebler’s equation & Grashof condition
Graphical position synthesis for two and three positions, quick return, straight line, and dwell
Analytical position synthesis for multiple positions, coupler curves, and fixed pivots
Use of a commercial software packages for mechanical linkage simulation, analysis, and synthesis
1.
2.
3.
4.
5.
COURSE LEARNING OUTCOMES
Students will demonstrate an understanding of Gruebler’s equation.
Students will demonstrate an understanding of the Grashof condition
Students are able to perform kinematic analysis of a mechanical linkage
Students are able to perform synthesis for multiple specified positions of a mechanical linkage.
Students will demonstrate proficiency in the use of commercial software packages for linkage analysis,
synthesis, and simulation.
POLICY REGARDING STUDENTS WITH DISABILITIES
Accommodations for students with disabilities will be made according to University policy. Accommodations are
collaborative efforts between students, faculty and Services for Students with Disabilities (SSD). Students with
accommodations approved through SSD are responsible for contacting the faculty member in charge of the course prior to
or during the first week of the term to discuss accommodations. Students who believe they are eligible for
accommodations but who have not yet obtained approval through SSD should contact SSD immediately at 737-4098.
POLICY REGARDING STUDENT ACADEMIC DISHONESTY AND CONDUCT
Instances of student academic dishonesty and improper conduct will be dealt with according to University policy.
Students are referred to http://oregonstate.edu/admin/stucon/achon.htm for a definition and examples of academic
dishonesty and improper conduct.
GENERAL COURSE INFORMATION
1. Assignments are due in class on the due date.
2. Week 10 lecture homework will not be collected, but students are responsible for the content.
SCHEDULE
Week
1 M(1/4)
T(1/5)
W(1/6)
F(1/8)
2 M(1/11)
T(1/12)
W(1/13)
F(1/15)
3 M(1/18)
T(1/19)
W(1/20)
F(1/22)
4 M(1/25)
T(1/26)
W(1/27)
F(1/29)
5 M(2/1)
T(2/2)
W(2/3)
F(2/5)
6 M(2/8)
T(2/9)
W(2/10)
F(2/12)
7 M(2/15)
No.
Topic
1
Course Introduction
1
2 Degrees of Freedom and Kinematic Diagrams
3
Determining DoF: Gruebler’s Equation
4
Number Synthesis & Isomers
2
Const. accel block & Revolute joint
5
Isomers, Transformations and Inversions
6
The Grashof Condition
No class (MLK day)
3
Slider crank & Sliding ladder
7
Lists
8
Functional Programming
9
Procedural Programming
4
Gearing mech. & Ellipse gen.
10
Solving Systems of Equations, subscripts
11
Position Analysis: Fundamentals
12
Position Analysis: Common Linkages
5
Cam follower
13
Position Analysis: Applications
14
Graphical Position Synthesis: Introduction
15
Midterm Exam (lectures 1-11)
6
Planetary gear
16
Graphical Position Synthesis: Two-Position
17 Graphical Position Synthesis: Three-Position
18
Graphical Position Synthesis: Quick Return
Mechanisms
T(2/16) 7
Telescopic mech. & Robotic arm
W(2/17) 19
Position Synthesis: Coupler Curves
F(2/19) 20
8 M(2/22) 21
T(2/23) 8
W(2/24) 22
F(2/26) 23
9 M(3/1)
24
T(3/2)
W(3/3)
F(3/5)
9
25
26
10 M(3/8)
T(3/9)
W(3/10)
F(3/12)
M(3/15)
6:00PM
27
10
28
29
Graphical Position Synthesis: Cognates
Graphical Position Synthesis: Straight line &
Dwell
Single cylinder engine
Analytical Position Synthesis: Two-Position,
Rocker Output
Analytical Pos’n Synthesis: Two-Position,
Coupler Output
Analytical Position Synthesis: Two-Position and
Beyond
U-joint & C-clamp
Analytical Position Synthesis: Fixed Pivots
Analytical Position Synthesis: Function
Generation
Velocity Analysis
Coriolis mech & Human builder
Acceleration Analysis
Wrap-up
Final Exam (covers weeks 1 to 10, emphasis on
6 to 10)
Text
Ch.1
Handout, Ch.1
2.0-2.4
2.5,2.6,2.8
2.7, 2.9
Ch.2,3
2.9, 2.10,2.12
2.13
Assignment
--See Bb
See Bb
2-11
Ch.2,3 results
2-10,12,63
2-22
Homework Due
---
Ch. 4,5
Ch.4,5 results
Ch.2,3 results
Week 2 lecture
Ch.6, 7
Ch.6,7 results
Ch.4,5 results
--
4.1-4.5
4.5-4.8
Ch.8
4.9-4.11
3.1-3.3
See Bb
See Bb
Ch.9
3.4
3.4
3.5
Ch.10,11
3.6
5.14
3.7
3.8-3.10
See Bb
Week 4 lecture
3-2*,64*
3-61*
3-67*,70*
Week 5 lecture
3-80**
Week 6 lecture
3-40*
3-72*
Ch.12
5.1-5.3
Week 7 lecture
5.4,5
5-8*
5.7,8,11,12
See Bb
Ch.13,14
5.9
5.13
See Bb
See Bb
Ch. 6
Ch.15,16
Ch.7
-Week 1 lecture
Week 8 lecture
Week 9 lecture
* Verify motion using a linkage simulation program
** Plot using both (i) the closed-form expression given in lecture 19 and (ii) position analysis techniques.