Thursday, May 10, 2018

Design Engineer’s Handbook By Keith L. Richards

Design Engineer’s Handbook By Keith L. Richards
Chapter 1 Beams
Chapter 2 Torsion of Solid Sections.
Chapter 3 Design and Analysis of Lugs and Shear Pins
Chapter 4 Mechanical Fasteners
Chapter 5 Limits and Fits
Chapter 6 Thick Cylinders
Chapter 7 Compound Cylinders
Chapter 8 The Design and Analysis of Helical Compression Springs Manufactured from Round Wire
Chapter 9 Introduction to Analytical Stress Analysis and the Use of the Mohr Circle
Chapter 10 Introduction to Experimental Stress Analysis
Chapter 11 Introduction to Fatigue and Fracture
Chapter 12 Introduction to Geared Systems
Chapter 13 Introduction to Cams and Followers
When writing a book on this subject, it is difficult to decide what to leave out. The world of mechanical design engineering is very broad and covers a wide range of subjects. 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. Some of the titles may seem a little obscure, but in my experience, working in a wide range of industries from machine tools to aerospace, I have used these subjects regularly.The chapters on beams and torsion are included for obvious reasons. Why a chapter on limits and fits? Some student engineers have difficulty in determining the correct type of fit to specify and select either a combination that is too loose or one that is expensive to attain. The chapter on lugs and shear pins is important in the design engineer’s armory, as you will meet this design feature time and time again. It is quite surprising that some lug designs are either under or overdesigned and have failed with very expensive results. I have addressed issues with mechanical fasteners, more specifically bolts and screws. I have not discussed other forms of fasteners such as rivets, and so forth, because there was insufficient space to do the subject full justice. This may be left to future publications. Because thick-wall or compound cylinders are not the exclusive province of the hydraulic or pneumatic engineer and are used quite extensively in mechanical engineering as connection features, I felt the subject should be covered. The chapter covering helical compression springs will be useful to the student engineer. I debated whether to include tension and torsion springs but decided against that for the time being. This may be included in future publications. The helical compression spring is the most commonly used spring, which justified coverage in its own chapter. I introduce the subject of analytical stress analysis using the Mohr’s circle. It is surprising that there are so many student engineers who have only had a passing reference to the circle; it has been used by me extensively in my career, as it helps to explain quite complex stress issues. Two chapters are devoted to stress analysis covering both analytical and experimental analysis. Although the chapter on experimental stress analysis may be considered rudimentary, it will give the reader an introduction to the subject.

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