Student design engineers often require a "cookbook" approach to solving certain problems in mechanical engineering. With this focus on providing simplified information that is easy to retrieve, retired mechanical design engineer Keith L. Richards has written Design Engineer’s Handbook.
This book conveys the author’s insights from his decades of experience in fields ranging from machine tools to aerospace. Sharing the vast knowledge and experience that has served him well in his own career, this book is specifically aimed at the student design engineer who has left full- or part-time academic studies and requires a handy reference handbook to use in practice. Full of material often left out of many academic references, this book includes important in-depth coverage of key topics, such as:
- Effects of fatigue and fracture in catastrophic failures
- Lugs and shear pins
- Helical compression springs
- Thick-walled or compound cylinders
- Cam and follower design
- Beams and torsion
- Limits and fits and gear systems
- Use of Mohr’s circle in both analytical and experimental stress analysis
This guide has been written not to replace established primary reference books but to provide a secondary handbook that gives student designers additional guidance. Helping readers determine the most efficiently designed and cost-effective solutions to a variety of engineering problems, this book offers a wealth of tables, graphs, and detailed design examples that will benefit new mechanical engineers from all walks.
Beams
Basic Theory
Stresses Induced by Bending
Deflection in Beams
Shear Deflection in Beams
Section Properties
Torsion of Solid Sections
Introduction
Basic Theory
Modulus of Section
Angle of Twist
Pure Torsion of Open Sections
Thin-Walled Closed Sections
Curved Members
Torsional Failure of Tubes
Sand Heap Analogy for Torsional Strength
Design and Analysis of Lugs and Shear Pins
Introduction
Analysis of Lugs with Axial Loading: Allowable Loads
Analysis of Lugs with Transverse Loading: Allowable Loads
Bearing at Lug-to-Pin or -Bush Interface
Shear Pin Analysis
Bush Analysis
Special Cases
Stresses Due to Interference-Fit Pins and Bushes
Stress Concentration Factor at Lug-to-Pin Interface
Examples
Mechanical Fasteners
Threaded Fasteners
Tensile and Shear Stress Areas
Tension Connections
Torque-Tension Relationship
Proof Load and Proof Stress
Fastener Preload
Fasteners Subject to Shear and Tension
Eccentric Loads
Prying Forces
Fasteners Subject to Alternating External Force
Limits and Fits
Introduction
Tolerance Grade Numbers
Fundamental Deviations
Preferred Fits Using the Basic Hole System
Surface Finish
Thick Cylinders
Introduction
A Thick-Walled Cylinder Subject to Internal and External Pressures
General Equations for a Thick-Walled Cylinder Subject to an Internal Pressure
The General Equation for a Thick-Walled Cylinder Subject to Internal and External Pressures
Example: Interference Fit
Example: Radial Distribution of Stress
Compound Cylinders
Introduction
Shrinkage Allowance
Examples
The Design and Analysis of Helical Compression Springs Manufactured from Round Wire
Elastic Stresses and Deflections of Helical Compression Springs Manufactured from Round Wire
Allowable Stresses for Helical Compression Springs Manufactured from Round Wire
Notes on the Design of Helical Compression Springs Made from Round Wire
Nested Helical Compression Springs
Introduction to Analytical Stress Analysis and the Use of the Mohr Circle
Introduction
Notation
Two-Dimensional Stress Analysis
Principal Stresses and Principal Planes
Construction of the Mohr Circle
Relationship between Direct and Shear Stress
The Pole of the Mohr Circle
Examples
The Analysis of Strain
Comparison of Stress and Strain Equations
Theories of Elastic Failure
Interaction Curves, Stress Ratio’s Margins of Safety, and Factors of Safety
Introduction to Experimental Stress Analysis
Photoelasticity
Photoelastic Coatings
Introduction to Brittle Lacquer Coatings
Introduction to Strain Gauges
Extensometers
Introduction to Fatigue and Fracture
Introduction and Background to the History of Fatigue
The Fatigue Process
Initiation of Fatigue Cracks
Factors Affecting Fatigue Life
Stress Concentrations
Structural Life Estimations
Introduction to Linear Elastic Fracture Mechanics
Fatigue Design Philosophy
Cycle Counting Methods
Introduction to Geared Systems
Introduction
Types of Gears
Form of Tooth
Layout of Involute Curves
Involute Functions
Basic Gear Transmission Theory
Types of Gear Trains
Power Transmission in a Gear Train
Referred Moment of Inertia, (Ireferred)
Gear Train Applications
Introduction to Cams and Followers
Introduction
Background
Requirements of a Cam Mechanism
Terminology
The Timing Diagram
Cam Laws
Pressure Angle
Design Procedure
Graphical Construction of a Cam Profile
Biography
Keith L. Richards brings more than 55 years of practical experience as a design engineer to his Design Engineer’s Handbook. After completing an apprenticeship program and earning a Masters degree in Engineering Design from Loughborough University, UK, he worked in a wide range of industries, including work on steel and aluminum rolling mills, power transmission systems, aircraft components, power plants, offshore structures, and pneumatic/hydraulic circuits. He is proficient in CAD and computational software, and in applied stress analysis. Additionally, he has worked in project management, purchasing, contracts, and creation of design plans. He has tapped his broad range of engineering activities to make Design Engineer’s Handbook an indispensable guide for both new and experienced engineers.
