ENME

ENME 400 - Machine Design

3 Credits

Textbook 

Shigley's Mechanical Engineering Design by Richard Budynas and Keith Nisbett, 10th edition, McGraw-Hill, Boston, MA, 2014.

Supplemental materials: Handouts for relevant standards.

Prerequisites 

Corequisite: ENME 361

Description 

Design of mechanical elements and planar machines. Failure theories. Design of pressure vessels, joints, rotating elements, and transmission elements. Kinematic structure, graphical, analytical, and analysis and synthesis of linkages, gear trains, and flywheels are covered.

Goals 

Through the material presented in this course, we intend to introduce you to the

  • Design of core machine elements such as shafts, bearings, fasteners, belts, pressure vessels, springs, and gears
  • Design of mechanical systems comprising such core machine elements, requiring analysis of motion, forces, and moments at the system level as well as design of individual components.

To achieve this, we will review the general concepts of force, stress, motion, and failure analysis first, followed by topics in the design of specific machine elements. There will be a decent amount of problem solving by hand calculations, followed by design of a mechanical system as a group project through hand and computer-assisted calculations.

Topics 

1. Review of fundamentals
  • Review of Mechanics of Materials
    • Axial loading, torsion
    • Stress distribution in cross sections under load: beams
    • Combined loading
    • Principal, maximum shear, and von-Mises stresses; Mohr’s circle
    • Stress concentrations
  • Review of failure mechanisms
    • Ductile and brittle failures
    • Cyclic fatigue failures
    • Review of rigid-body kinematics

2.   Machine Elements

  • Joints:
    • Threaded fasteners and design of nonpermanent joints
    • Design of welding joints
  • Piping and Pressure Vessels
    • Thick and thin pressure vessels
    • Press-fit couplings
  • Mechanisms
    • Springs
  • Rotating Parts
    • Shafts
    • Lubrication and journal bearings
    • Rolling contact bearings
    • Gears
  • Transmission
    • Belts and pulleys
    • Couplings

Learning Outcomes 

  • an ability to apply knowledge of mathematics, science, and engineering
  • an ability to design a system, component, or process to meet desired needs within realistic constraints such as economic, environmental, social, political, ethical, health and safety, manufacturability, and sustainability
  • an ability to function on multi-disciplinary teams
  • an ability to identify, formulate, and solve engineering problems
  • an understanding of professional and ethical responsibility
  • a recognition of the need for, and an ability to engage in life-long learning
  • an ability to use the techniques, skills, and modern engineering tools necessary for engineering practice

Class/Laboratory Schedule 

  • Two 50 minute lectures and one 110 minute lab each week

Last Updated By 
Chandrasekhar Thamire, June 2017