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Summary
Summary
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 analysisThis 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.
Author Notes
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.
Table of Contents
| 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 RatioâÇÖs 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 |
