ENME400: Machine Design

Credits: 3

Description

Prerequisite: Must have completed or be concurrently enrolled in ENME361.
Restriction: Permission of ENGR-Mechanical Engineering department.
Design of mechanical elements and planar machines. Failure theories. Design of pressure vessels, joints, rotating elements, and transmission elements. Kinematic structures, graphical, analytical, and numerical analysis and synthesis of linkages, gear trains, and flywheels are covered.

Semesters Offered

Fall 2017, Spring 2018, Summer 2018, Fall 2018, Winter 2019, Spring 2019, Summer 2019, Fall 2019, Spring 2020, Fall 2020, Winter 2021, Spring 2021, Summer 2021, Fall 2021, Spring 2022, Summer 2022, Fall 2022, Spring 2023, Summer 2023, Fall 2023, Fall 2024, Summer 2024
Testudo

Learning Objectives

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 Covered

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

Additional Course Information

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.

Class/Laboratory Schedule 

  • Two 50 minute lectures and one 110 minute lab each week
Last Updated By 
Chandrasekhar Thamire, June 2017