Module 3 - Design of Mechanical Elements
Chapter 7: Shafts & Shaft Components
Chapter 7 Overview
Chapter 7 covers the following key concepts:
- Shaft design
- Critical speeds for shafts
- Miscellaneous shaft components
- Limits and fits
Lecture 16A
In case you missed it, here's a video of the first part of lecture 16. In this video, we introduce the fundamentals of shaft design and explore best practices for ensuring strength, durability, and performance.
Lecture 16B
In case you missed it, here's a video of the second part of lecture 16. In this video, we take a deeper dive into the vibration characteristics of shafts and why understanding critical speed and natural frequency is essential for designing reliable rotating systems.
Lecture 16C
In case you missed it, here's a video of the third part of lecture 16. In this video, we explore how to securely couple hubs to shafts using keys and splines. These connections are critical in power transmission, and understanding their design considerations helps prevent failures.
Lecture 16 Tasks
In this lecture, we will learn about the design of shafts and shaft components (e.g. gears, pulleys, belts, keys). Some common best practices and design considerations will be discussed.
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Read
- Sections 7.1-7.7 Shigley's Mechanical Engineering Design.
- Browse the available keys on McMaster-Carr
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Watch
- Whirling (Critical Speed) and Different Nodes of Rotating Shaft: See an experimental procedure to obtain the critical speed (natural frequency) of a rotating shaft.
- Key Failure || Shaft key failure: This video deomnstrates the failure modes of a key.
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Practice
- Problems 7-4 and 7-13 from Shigley's Mechanical Engineering Design, and then review the solutions posted.
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Complete
- Lecture 16 Quiz: due Thursday, March 6 at 11:59 PM.
Lecture 16 Notes
- Lecture 16 Notes[pdf]
EXTRA - Interference Fit Notes
- EXTRA - Interference Fit Notes[pdf]