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Fundamentals of Machine Component Design Fifth Edition by Robert C. Juvinall and Kurt M. Marshek PDF Free Download.
This book is printed on acid free paper.
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This book is intended as a text for first courses in Mechanical Engineering Design and as a reference for practicing engineers.
It is assumed that the user has had basic courses in Mechanics, Strength of Materials, and Materials Properties.
However, the first nine chapters of the book (Part I) serve to review as well as extend this basic background. The remaining chapters (Part II) deal with the application of these fundamentals to specific machine components.
Features of the fifth edition of the text include:
Modern/current issues and safety considerations—New homework problems outline real world safety issues adapted from actual case studies.
Homework questions which help the student research, outline, and write on issues which confront the modern engineer are scattered throughout the text.
Composites—A new section is presented to introduce composite materials and their properties to the student. New references provide the student with a foundation of information regarding composite materials.
Engineering material selection process—Ashby’s material selection charts are reviewed and discussed and are available as an aid to students in learning more about engineering materials.
New topics MIL-HDBK-5J and MIL-HDBK-17 are introduced which aid the student in selection and use of common engineering materials.
Web site addresses and problems—Web site addresses are given throughout the text to provide the student with access to additional information on topics including industrial standards, part selection, and properties of materials.
Problems appear at the end of the chapter that require the student to utilize the internet in solving various machine component design problems.
Three-dimensional stress—A new sample problem gives the student a powerful tool to analyze complex stress states, and new related homework problems give opportunity for the student to polish analysis skills.
Wear and wear theory—Additional text on discretization wear theory outlines the use of wear models for machine parts. Associated homework problems introduce the student to the unique test apparatus used to determine wear coefficients.
Shaft critical speeds—This section is expanded with additional solution methods and theory discussion including explanation of both Rayleigh’s and Dunkerley’s equations. New and revised homework problems accompany this section to challenge the student regarding these ideas.
Appendix—Contributed appendixes have been added for using reference MIL-HDBK-5J, vectorial solution methods, normal distributions, fatigue cycle formulas, and gear terminology.
Although much of Part I of the text is a review of earlier courses, we would like to call attention to several particular sections.
Sections 1.2, 1.3, and 1.4 deal with three of the broadest aspects of engineering—safety, ecology, and social significance. These are concerns to which today’s students are particularly responsive.
Section 1.7 presents a methodology for solving machine component problems. Embodied in this methodology is a sample problem format that includes a restatement, solution,
And comments for the problem under the headings: known, find, schematic, decisions, assumptions, analysis, and comments. Decisions are choices made by the designer.
Since design is an iterative decision-making process of synthesis, whenever the heading “decisions” is utilized, a design problem is presented. If a solution is presented without decisions being made, the problem is one of analysis.
The inclusion of the category “decisions” allows the student to see clearly the difference between design and analysis. Once appropriate decisions have been made, analysis can follow.
Assumptions, which are used in solving a problem, are statements about beliefs; for example, the material is homogeneous throughout. The design engineer and the student need to understand what assumptions are made in solving a problem.
The listing of assumptions provides more opportunity for students of machine design to “think before doing.
” Comments present key aspects of the solution and discuss how better results might be obtained by making different design decisions, relaxing certain assumptions, and so on.
Sections 1.8, 1.9, and 1.10 review fundamental energy relationships. Most students at this level need to gain insight and understanding concerning such basic matters as the relationship between work input to a rotating camshaft and work output at a translating follower, and the relationship between engine power, vehicle speed, and fuel consumption.
Most teachers of Mechanical Engineering Design lament the weakness of their students in the area of free-body diagram analysis of loads. Unless the loading on a machine component is properly established, subsequent design or analysis is of little value. Section 2.2 and the associated problems are directed toward helping relieve this common deficiency
References are often an invaluable resource for the student as they provide in depth coverage of topics to which the text may only be able to devote a single paragraph. As such, MIL-HDBK-17 is introduced to the student in Chapter 3 and MIL-HDBK-5J in Appendix F. These two references provide a wealth of pragmatic engineering knowledge regarding engineering materials and composites. The use of these volumes along with the chapter references has the ability to dramatically enhance a student’s knowledge base.
An elementary treatment of residual stresses is included in Chapter 4. An understanding of the basic concepts involved is vital to modern stress analysis, particularly when fatigue is present.
Castigliano’s method for determining elastic deflections and redundant reactions is included in Chapter 5. This method permits ready solution of many problems not amenable to traditional elementary methods.
Chapter 6 on Failure Theories, Safety Factors, Stress Intensity Factors, and Reliability includes introductory treatments of fracture mechanics and of the interference theory of statistical reliability prediction.
Chapter 8 contains a simplified, condensed, and introductory version of Fatigue Design and Fatigue Crack Growth. This chapter is particularly important, and represents primarily new material for most students.
Chapter 9 deals with the various kinds of surface deterioration experienced by machine components. This is of great importance because more machine parts “fail” (cease to be suitable for performing their intended function) because of surface damage than from actual breakage.
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