Semester:  Spring 2005
Class Codes: 22512

Prerequisites: ME 154,  Corequisite: ME110, ME147 

Meeting Hours & Room:   MW 11:00-12:15 pm,  Room E337 

Instructor: Dr. Raymond K. Yee     (408) 924-3935     Office: E-310E

                                                        Email:  rkyee@email.sjsu.edu

Office Hours:  Check with the Department office

Introduction to the mechanical design process: Design specification development, conceptual design, and product design process. Application of the fundamentals from statics, dynamics, strength of materials, static and fatigue failure theories are applied to specific machine components. Emphasis will be placed on the integration of the mechanical engineering disciplines and systematic integrated approach to design of machine elements and systems. Plastics and composite materials in design will be introduced. Also Introduction to fracture mechanics will be covered in this course. The required group design project will increase the students' understanding of the design process. 3 units. Prerequisites: ME147, ME154, Corequisite: ME110.

Required Texts:  R.L. Norton, "Machine Design", 2^nd Edition, Prentice Hall,  2000 (MD)
                             D.G. Ullman, "The Mechanical Design Process", 3rd Edition, McGraw Hill, 2003                                    

1.   Baumeister, Avallon, et al, Marks Handbook for Mechanical Engineers.

2.   American Society for Metals, Metals Handbook, Vols. 8 & 10.

3.   Juvinall and Marshek, Fundamentals of Machine Components Design, Wiley, 2001.

4.   Roark, Formulas for Stress and Strain, 6th ed, McGraw Hill, 1996.

5.   Rolfe and Barsom, Fracture and Fatigue Control in Structure, Prentice Hall, 1996.

6.   Dudley, W.D., Practical Gear Design,  McGraw Hill, 1984

7.   Ertas, Atila and Jones, Jesse,  The Engineering Design Process, Wiley, 1993.

8.   Shirley, Joseph E. and Mischke, Charles R., Mechanical Engineering Design, 6^th Edition,

Group Project Students are responsible, working in a group, to work on a design project based on specific design objectives, to synthesize, analyze, and to demonstrate its functionality through simulations (refer to the handout for details). They are also required to write a report and to make a brief presentation.

Homework: Weekly reading of the text and homework problems.
                    Note: Late homework assignments will not be accepted!

Course Goals

• To introduce the Mechanical Engineering Process, design flow chart, identification of a need, specification and requirements, conceptual design, evaluation of concepts, product design, human factor.

• To design and select (from catalogs) various machine components such as: mechanical springs, contact bearings, brakes and clutches, gears, shafts.

• To introduce linear elastic fracture mechanics and design based on fracture toughness.

• To have students work as a team to design a mechanical system and prepare a technical report.

Students Learning Objectives

The students should be able to:

• Select a project to design a new product or modify an existing product, based on market research, and carry it through the design process up to building the CAD prototype and evaluation for function.
• Determine the location and magnitude of the maximum stress on a component.
• Estimate the value of the stress concentration factor and apply it correctly to the stress component.
• Design a machine component to guard against yielding or fracturing under static load using the appropriate failure criteria and safety factors.
• Design a machine component to guard against fatigue failure, either using the classical approach or the fracture toughness approach.
• Identify factors that have an influence on the design and selection of different machine components.
• Design a spring, given the applied load and desired deflection, and select it from catalogs.
• Select a suitable bearing from catalogs by knowing the bearing loads (radial and thrust), bearing life and reliability.
• Design a gear reducer (planetary or conventional) to obtain a certain output speed and use AGMA code to determine the allowable load and select a suitable gear from catalogs.
• Aware of the choices they have when it comes to material selections: metals as compared to composites or plastics.