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1. Course Information

Instructor:     Dr. Raymond K. Yee

Department:   Mechanical & Aerospace Engineering
College of Engineering, San Jose State University

Spring Semester, 2008

2. Course Description:

a. Course Overview and Description:

Introduction to Mechanisms design and analysis.  Graphical and analytical synthesis of mechanisms, motion, and function generation mechanisms.  Complex polar notation and closed loop vector equations will be used to analyze mechanisms.  Position, velocity, acceleration and force analyses.  Application of statics, dynamics, strength of materials, static failure theories and fatigue failure theory to the design of machine components. Threaded fasteners and the design of bolted joints. The course will include a term project that involves the design and fabrication of a mechanical device.     

b. Prerequisites:      C- or better in both ME101 and CE112; ME 20

c. Required and recommended texts, readers, or other reading materials:

Required Text:  Robert L. Norton, "Machine Design", 3^rd Edition, Prentice Hall, 2006 (MD)

Recommended Text: Robert L. Norton, "Design of Machinery; Introduction to Synthesis and Analysis of Mechanisms", 3^rd Edition, McGraw-Hill Inc. 2004 (DOM)

d. Other suggested reference materials:

References: Waldron and Kinzel, “Kinematics, Dynamics, and Design of Machinery”, Wiley, 1999.

                   Erdman, Sander, and Kota, “Mechanism Design; Analysis and Synthesis Vol. 1”, 4^th edition, Prentice-Hall, 2001.

                   Juvinall and Marshek, “Fundamentals of Machine Component Design”, 3^rd edition, Wiley, 2000.

                   Shigley and Mischke, Mechanical Engineering Design, 6^th edition, McGraw Hill, 2001.

e. Student learning objectives for the course:

By the end of the course, students should be able to:

1.              Apply the concept of kinematics pairs (joints) and determine the number of degrees of freedom for a given mechanism.

2.              Identify the different types of four-bar mechanisms and their classifications.

3.              Identify the toggle positions and to determine the minimum transmission angle and mechanical advantage of a given mechanism.

4.              Synthesize a four-bar mechanism using graphical and analytical methods for a given motion or function generation task.

5.              Perform a kinematics analysis of a mechanism to determine position, velocity, and acceleration of all members.

6.              Perform a kinetic analysis of a mechanism to determine the forces on all joints and the torque required to drive the mechanism.

7.              Determine the magnitude and location of the maximum stress (principal stresses, maximum shear stress and von Mises stress) on a component.

8.              Design and analyze short and long columns.

9.              Design and analyze thin and thick walled cylinders under pressure and to select proper interference fits for press and shrink fits.

10.          Design and analyze ductile and brittle machine components under static loads using appropriate failure criterion.

11.          Estimate the value of stress concentration factor.

12.          Design and analyze machine components under cyclic loads to guard against fatigue failure.

13.          Design bolted joints in tension and shear.

14.          Work as a team to accomplish project goal.

3. Course requirements:

a. Projects:  Design project will be required for this course.  Students are responsible, working in a group, to design a mechanism based on a specific need, synthesize, analyze, build a prototype and demonstrate its functionality (Refer to the handout for details). They are also required to write an engineering report and to make a brief final presentation at the end of the semester (report and presentation formats will be discussed in class).

b. Exams:  Quizzes, two midterms, and one final exam.

c. Homework:  Weekly reading of the text and homework problems.  Usually due in one week unless notice otherwise.

Note:  Late homework assignments will not be accepted!

d. Class Participation: Students are encouraged to actively participate in class discussion and problem solving.

4. Tentative course calendar including assignment due dates, exam dates, date of Final exam:

(Please note that the course calendar is “subject to change with fair notice”)

Week                                         Lecture Topic(s)

1.          Course organization, Introduction, Linkages, Degree of freedom, Kinematics pairs, Design project discussion.   (Ch 1&2 in DOM)      

2.          4-Bar mechanism, mechanism classification, transmission angle, graphical synthesis; Motion generation mech. (two & three positions) mechanical advantage, toggle positions.  (Ch 3 in DOM)

3.          Graphical synthesis: motion generation mechanisms (2 & 3 positions), synthesis with prescribed timing, Adding Dyad to mechanism, synthesis of a quick-return mechanism.  (Ch 3 in DOM)

4.          Analytical synthesis: complex polar notation, closed loop vector equation, motion generation mechanisms (two to five position).  (Ch 4 & 5 in DOM)

5.          Analytical synthesis: function & path generation mechanisms, analytical analysis; Position, Velocity and Acceleration. Example problems.  (Ch 5, 6, & 7 in DOM)

1^st Midterm

6.          Forces on mechanisms: Matrix method, Graphical method, Project discussion, and example problems.  (Ch 11 in DOM)

7.          Review of stress & strain, principal stresses.  (Ch 4 in MD)      

8.          Review of combined stresses: bending, torsion, column design.  (Ch 4 in MD)

9.          Design of thin & thick walled cylinders, press and shrink fits, material selection for design.  (Ch 2&4 in MD)

10.      SPRING BREAK

11.      Failure theories for static loads: maximum shear stress theory, the distortion-energy theory, modified Coulomb-Mohr theory (brittle materials).  (Ch 5 in MD)

12.      The concept of stress concentration, Failure theory for cyclic loads (Fatigue), high cycle fatigue; S-N curve.  (Ch 4 & 6 in MD)

2^nd Midterm

13.      Effect of mean stress on fatigue life (Modified Goodman Diagram), combined stresses, Example problems.  (Ch 6 in MD)

14.      Bolted joint design: thread standards, stresses, bolt and member stiffness.  (Ch 14 in MD)

15.      Static & fatigue stress analysis, bolted joints in tensile and shear loads, bolt preload and torque, Design considerations.  (Ch 14 in MD)

16.      Design project presentation and demonstration, course review - Project report due date.

FINAL Exam:  Tuesday May 20, 2008, 9:45 to 12:00 pm

5. Grades:

 a. Grading information:

Grading Percentage Breakdown

6. University, College, or Department Policy Information:

a) Academic integrity statement (from Office of Judicial Affairs):

“Your own commitment to learning, as evidenced by your enrollment at

San José State University and the University’s Academic Integrity

Policy requires you to be honest in all your academic course work.

Faculty is required to report all infractions to the Office of Judicial Affairs.
The policy on academic integrity can be found at http://www2.sjsu.edu/senate/S04-12.pdf

b) Campus policy in compliance with the Americans with Disabilities Act:

“If you need course adaptations or accommodations because of a

disability, or if you need special arrangements in case the building

must be evacuated, please make an appointment with me as soon as

possible, or see me during office hours. Presidential Directive 97-03

requires that students with disabilities register with DRC to establish a

record of their disability.”

c) College of Engineering Policies and Procedures:

To ensure that every student, current and future, who takes courses in the Engineering Building, has the opportunity to experience an environment that is safe, attractive, and otherwise conducive to learning, the College of Engineering at San José State University has established the following classroom policies:

Eating:

Eating and drinking (except water) are prohibited in the Engineering Building classrooms.  Students with food will be asked to leave the classroom.  Students who disrupt the course by eating and do not leave the classroom will be referred to the Judicial Affairs Officer of the University.

 Cell Phones:

Students will turn their cell phones off or put them on vibrate mode while in class.  They will not answer their phones in class.  Students whose phones disrupt the course and do not stop when requested by the instructor will be referred to the Judicial Affairs Officer of the University.

 Computer Use:

In the classroom, faculty allow students to use computers only for class-related activities.  These include activities such as taking notes on the lecture underway, following the lecture on Web-based PowerPoint slides that the instructor has posted, and finding Web sites to which the instructor directs students at the time of the lecture.  Students who use their computers for other activities or who abuse the equipment in any way, at a minimum, will be asked to leave the class and, at a maximum, will be referred to the Judicial Affairs Officer of the University for disrupting the course.  (Such referral can lead to suspension from the University.)  Students are urged to report to their instructors computer use that they regard as inappropriate (i.e., used for activities that are not class related).

Academic Honesty:

I have read the honor code below and agreed with its provisions.  My continued enrollment in this course constitutes full acceptance of this code.

To preserve academic integrity, I will not:

1. Take an exam in place of someone else, or have someone take an exam in my place
2. Give information or receive information from unauthorized source during an exam
3. Use more reference material during an exam than is allowed by the instructor
4. Obtain a copy of an exam prior to the time it is given
5. Alter an exam after it has been graded and return it to the instructor for re-grading

 Students who are caught cheating will be reported to the Judicial Affairs Officer of the University, as prescribed by Academic Senate Policy S04-12. 

7. APPENDIX:

• “In addition to my specifically posted office hours, I am also available by arrangement if necessary.

• “You are responsible for understanding the policies and procedures about add/drops, academic renewal, withdrawal, etc. found at http://www2.sjsu.edu/senate/S04-12.pdf

• Expectations about classroom behavior; see Academic Senate Policy S90-5 on Student Rights and Responsibilities.

• As appropriate to your particular class, a definition of plagiarism, such as that found on Judicial Affairs website at http://www2.sjsu.edu/senate/plagarismpolicies.htm

• “If you would like to include in your paper any material you have submitted, or plan to submit, for another class, please note that SJSU’s Academic Integrity policy S04-12 requires approval by instructors.”