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Purdue School of Engineering and Technology

Purdue School of Engineering and Technology

Machine Design

ME 45310 / 3 Cr. (3 Class)

This course prepares the student to: apply basic mechanics (statics and dynamics), mechanics of materials, and probably and statistics to the analysis and design of machines and machine components; design for strength of various machine components; study of stress/strain and force/deflection relations in machine components; understand fundamental approaches to stress and fatigue analysis and failure prevention; incorporate design methods for machine components such as shafts, bearings, springs, gears, clutches, breaks, chains, belts, and bolted and welded joints; and solve open-ended machine design problems involving structural analysis, life prediction, cost, reliability analysis, and technical communication.

Textbooks

R.G. Budynas and J.K. Nisbett, Shigley’s Mechanical Engineering Design, McGraw-Hill, 9th Ed., 2010.

Goals

The objectives of this course include:

  1. Prepare students to apply principles of basic mechanics, mechanics of materials, and statistics to the design of machines and machine components.
  2. Apply design method for mechanical components such as springs, screws, and clutches, which meet given design criteria, including strength requirements
  3. Provide students with engineering criteria and design methods for material and component selection.
  4. Instruct students on the use of computer-aided design tools (e.g., Pro/Mechanica, Pro/Engineer, Matlab, Excel) to solve design problems.
  5. Apply engineering principles to open-ended mechanical design problems.
Outcomes

After completion of this course, the students should be able to:

  1. Apply knowledge of probably and statistics to mechanical design problems [a][PUL: 2a]
  2. Apply knowledge of mechanical engineering science, such as solid mechanics and material science to mechanical design problems [a][PUL: 4a]
  3. Design a mechanical system to meet desired engineering requirements including strength requirements [c][PUL: 3, 4b, 4c].
  4. Formulate and solve mechanical design problems [e][PUL: 2b, 2c, 2d].
  5. Communicate effectively the solution to a design problem making of technical drawings and proper technical reports [g][ME: PUL 1].
  6. Analyze potential impact of designed machines on environment and society, including safety [f, h][PUL: 2c, 3b, 3d].
  7. Conduct literature review, including research papers and patents [j, k][PUL: 3a, 4b].
  8. Use modern engineering tools (e.g., Pro/Mechanica, Pro/Engineer, Matlab, Excel) in the analysis and design of machines and machine components [k][PUL: 1a, 2b, 2c]

Note: The letters within the brackets indicate the general program outcomes of mechanical engineering. See: ME Program Outcomes.

Topics
  1. Part I – Fundamentals of mechanical design (4 weeks)
    1. Stress-strain relations and deformation analysis
    2. Uncertainty quantification, factor of safety, and probability of failure
    3. Development of a machine design project
  2. Part II – Failure prevention (5 weeks)
    1. Static failure analysis
    2. Fatigue failure analysis
    3. Statistical considerations
  3. Part III – Design of mechanical elements (6 weeks)
    1. Screws and fasteners
    2. Permanent joints (welding, brazing, and bonding)
    3. Mechanical springs: compression, extension, and torsion
    4. Bearing selection and mounts
    5. Gearing loads, stresses, strength, and safety factors
    6. Clutches, breaks, and flywheels
    7. Belts and chains
Shaft and axles
Computer Usage

Matlab, Pro/Mechanica, Pro/Engineer, Excel