Module 3 Overview

In this module, we will discuss the design of various mechanical elements used in machines, including:

• Chapter 7: Shafts and Shaft Components (Lecture 16)
  • Shaft design
  • Critical speeds for shafts
  • Miscellaneous shaft components
  • Limits and fits
• Chapter 10: Mechanical Springs (Lectures 17-18)
  • Stresses in helical springs
  • Spring materials
  • Critical frequency of helical springs
  • Fatigue of helical compression springs
• Chapter 11: Rolling-Contact Bearings (Lectures 19-20)
  • Bearing types
  • Relating bearing load, life, and reliability
  • Combined radial and thrust loading
• Chapter 12: Lubrication and Journal Bearings (Lecture 21)
  • Types of lubrication
  • Petroff's equation
  • Design variables
• Chapter 13: Gears - General (Lectures 22-23)
  • Types of gears
  • Contact ratio
  • Gear trains
  • Force analysis
• Chapter 14: Spur and Helical Gears (Lecture 24)
  • The Lewis bending equation
  • Surface durability
• Chapter 8: Screws, Fasteners, and the Design of Nonpermanent Joints (Lecture 25)
  • Thread standards and definitions
  • Joint stiffness
  • Bolt strength
  • Relating bolt torque to bolt tension

At the end of this module, you will be equipped with essential tools to design and analyze machine components.