Statics and Mechanics of Materials / Edition 1

by Anthony Bedford, Kenneth Liechti, Wallace Fowler

Overview

This book presents the foundations and applications of statics and mechanics of materials by emphasizing the importance of visual analysis of topics—especially through the use of free body diagrams. It also promotes a problem-solving approach to solving examples through its strategy, solution, and discussion format in examples. The authors further include design and computational examples that help integrate these ABET 2000 requirements. KEY TOPICS: Chapter topics include vectors, forces, systems of forces and moments, objects in equilibrium, structures in equilibrium, centroids and centers of mass centroids, moments of inertia, measures of stress and strain, states of stress, states of strain and the stress-strain relations, axially loaded bars, torsion, internal forces and moments in beams, stresses in beams, deflections of beams, buckling of columns, energy methods, and introduction to fracture mechanics. MARKET: For civil/aeronautical/engineering mechanics.

Product Details

ISBN-13:	9780130285935
Publisher:	Pearson Education
Publication date:	09/25/2002
Edition description:	New Edition
Pages:	720
Product dimensions:	8.00(w) x 9.90(h) x 1.60(d)

About the Author

Anthony Bedford is Professor of Aerospace Engineering and Engineering Mechanics at the University of Texas at Austin. He received the B.S. degree from the University of Texas at Austin, the M.S. degree from the California Institute of Technology, and the Ph.D. degree from Rice University in 1967. He has industrial experience at Douglas Aircraft Company and at TRW, where he did structural dynamics and trajectory analyses for the Apollo program. He has been on the faculty of the University of Texas at Austin since 1968. He is a member of the University of Texas Academy of Distinguished Teachers and has received several teaching awards over the years.

Dr. Bedford's main professional activity has been education and research in engineering mechanics. He has been principal investigator on grants from the National Science Foundation and the Office of Naval Research, and from 1973 until 1983 was a consultant to Sandia National Laboratories, Albuquerque, New Mexico. His other books include Hamilton's Principle in Continuum Mechanics, Introduction to Elastic Wave Propagation (with D.S. Drumheller), and Mechanics of Materials (with K.M. Liechti).

Wallace T. Fowler holds the Paul D. and Betty Robertson Meek Professorship in Engineering in the Department of Aerospace Engineering and Engineering Mechanics at University of Texas at Austin. Dr. Fowler received the B.A., M.S., and Ph.D. degrees from the University of Texas at Austin, and has been on the faculty there since 1965. During the Fall of .1976, he was on the staff of the United States Air Force Test Pilot School, Edwards Air Force Base, California, and in 1981-1982 he was a visiting professor at the United States Air Force Academy. Since 1991 he has been Associate Director of the Texas Space Grant Consortium.

Dr. Fowler's areas of teaching and research are dynamics, orbital mechanics, and spacecraft mission design. He is author or coauthor of technical papers on trajectory optimization, attitude dynamics, and space mission planning and has also published papers on the theory and practice of engineering teaching. He has received numerous teaching awards including the Chancellor's Council Outstanding Teaching Award, the General Dynamics Teaching Excellence Award, the Halliburton Education Foundation Award of Excellence, the ASEE Fred Merryfield Design Award, and the AIAA-ASEE Distinguished Aerospace Educator Award. He is a member of the Academy of Distinguished Teachers at the University of Texas at Austin. He is a licensed professional engineer, a member of several technical societies, and a Fellow of both the American Institute of Aeronautics and Astronautics and the American Society for Engineering Education. In 2000-2001, he served as president of the American Society for Engineering Education.

Kenneth M. Liechti is a Professor of Aerospace Engineering and Engineering Mechanics at the University of Texas at Austin and holds the E. P. Schoch Professorship in Engineering. He received the B.Sc. degree in aeronautical engineering from Glascow University and the M.S. and Ph.D. degrees in aeronautics from the California Institute of Technology. He gained industrial experience at the Fort Worth Division of General Dynamics prior to joining the faculty of the University of Texas at Austin in 1982.

His primary areas of teaching and research are in the mechanics of materials and fracture mechanics. He is the author or coauthor of papers on interfacial fracture, fracture in adhesively bonded joints, and the nonlinear behavior of polymers. He has consulted on fracture problems with several companies.

Dr. Lieehti is a Fellow of the American Society of Mechanical Engineers and a member of the Society for Experimental Mechanics, the American Academy of Mechanics, and the Adhesion Society. He is an associate editor of the journal Experimental Mechanics, published by the Society for Experimental Mechanics.

Read an Excerpt

Our original objective in writing this book was to present the foundations and applications of statics and mechanics of materials as we do in the classroom. We used many sequences of figures, emulating the gradual development of a figure by a teacher explaining a concept. We stressed the importance of visual analysis in gaining understanding, especially through the use of free-body diagrams. Because inspiration is so conducive to learning, we based many of our examples and problems on a variety of modern engineering applications. Key Series Features

This volume completes our series in Engineering Mechanics that includes

• Engineering Mechanics–Statics, Third Edition, by Bedford and Fowler
• Engineering Mechanics–Dynamics, Third Edition, by Bedford and Fowler
• Engineering Mechanics–Statics & Dynamics, Third Edition, by Bedford and Fowler
• Engineering Mechanics–Statics Principles, by Bedford and Fowler
• Engineering Mechanics–Dynamics Principles, by Bedford and Fowler
• Engineering Mechanics–Statics & Dynamics Principles, by Bedford and Fowler
• Mechanics of Materials by Bedford and Liechti
• Statics and Mechanics of Materials by Bedford, Fowler, and Liechti (this volume)

Positive responses from users and reviewers have led us to retain the basic organization, content, and features. During our preparation of this volume, we examined how we presented each concept, example, figure, summary statement, and problem. Where necessary, we made changes, additions, or deletions to simplify and clarify the presentation. This volume features

• Problemsthat contain elements of engineering design have been marked with a new D icon.
• We have added new examples where users indicated more were needed. Many of the new examples continue our emphasis on realistic and motivational applications and engineering design.
• New sets of Study Questions appear after most sections to help students check their retention of key concepts.
• Each example is clearly labeled for its teaching purpose.
• A redesigned text and added photographs throughout help students connect the text real world applications and situations.

Examples that Teach

The Strategy/Solution/Discussion framework employed by most of our examples is designed to emphasize the critical importance of good problem-solving skills. Our objective is to teach students how to approach problems and critically judge the results. Commitment to Students and Instructors

In preparing this volume and the accompanying solutions manual, we have taken precautions to ensure accuracy to the best of our ability. We have each solved the new problems in an effort to be sure that their answers are correct and that they are of an appropriate level of difficulty. Karim Nohra of the University of South Florida also checked the text, examples, problems and solutions manual. Any errors that remain are the responsibility of the authors.

We welcome communication from students and instructors concerning errors or areas for improvement. Our mailing address is Department of Aerospace Engineering and Engineering Mechanics, University of Texas at Austin, Austin, Texas 78712. Our electronic mail address is [e-mail]. Supplements

Instructor's Solutions Manual This supplement, available to instructors contains complete solutions to all of the problems and several sample syllabi. Each solution comes with problem statement as well as associated artwork.

Study Packs are designed to give students the tools to improve their mechanics study skills. They consists of three study components: a free body-diagram workbook, a Visualization CD based on Working Model Software, and an access code to a website with 500 sample Statics and Dynamics problems and solutions.

• Free-Body Diagram Workbook prepared by Peter Schiavone of the University of Alberta. This workbook begins with a tutorial on free body diagrams and then includes 50 practice problems of progressing difficulty with complete solutions. Further "strategies and tips" help students understand how to use the diagrams in solving the accompanying problems.
• Working Model CD contains 25 pre-set simulations of Statics examples that include questions for further exploration. Simulations are powered by the Working Model Engine and were created with actual artwork from the text to enhance their correlation with the text.
• Password-Protected Website contains 500 sample Statics and Dynamics problems for students to study. All problems are supplemental and do not appear in this volume. Student passwords are printed on the inside cover of the Free-Body Diagram Workbook. To access this site, students should go to http://www.prenhall.com/bedford and follow the on-line directions to register.

The Study Packs are available as a stand-alone item or can be bundled with this volume at additional cost. Order stand-alone Study Packs with the ISBN 0-13-061574-9.

MATLAB^®/Mathcad^® Tutorials Twenty tutorials showing how to use computational software in engineering mechanics. Each tutorial discusses a basic mechanics concept, and then shows how to solve a specific problem related to this concept using MATLAB/Mathcad. There are twenty tutorials each for MATLAB and Mathcad, and are available in PDF format from the password-protected area of the Bedford website. Passwords appear in each student study pack. Worksheets were developed by Ronald Larsen and Stephen Hunt of Montana State University-Bozeman.

Website—http://www.prenhall.com/bedford contains mechanics multiple-choice and True/False quizzes developed by Karim Nohra of the University of South Florida. Web Assessment, MATLAB/Mathcad tutorials, and Study Pack questions and solutions are all available at the password protected part of this website. Passwords for the protected portion are printed in the Statics Study Pack.

ADAMS Simulations for Dynamics Mechanical Dynamics, Inc. has created over 100 simulations of problems from Dynamics using their ADAMS simulation/protyping software. Professors and students can simulate an( observe the effects of changing parameters in systems and gain deeper insight into their behavior. Simulations also come with an accompanying avi "movie" file. Files are located at the password-protected part of the website. Students should use their study pack passwords and professors should contact their Prentice Hall representative for professor access. Qualified adopters may also be able to obtain free site licenses. Contact [e-mail] for more information.

Web Assessment Software PH Grade Assist lets students solve static problems with randomized variables so each student solves a slightly different problem. For more information and pricing, contact your local Prentice Hall representative or visit http://www.prenhall.com/bedford and choose Engineering Mechanics.

Table of Contents

1. Introduction.

Engineering and Mathematics. Learning Mathematics. Fundamental Concepts. Units.

2. Vectors.

Scalars and Vectors. Rules for Manipulating Vectors. Cartesian Components. Components in Two Dimensions. Components in Three Dimensions. Products of Vectors. Dot Products. Cross Products. Mixed Triple Products.

3. Forces.

Types of Forces. Equilibrium and Free-Body Diagrams. Two-Dimensional Force Systems. Three-Dimensional Force Systems.

4. Systems of Forces and Moments.

Two-Dimensional Description of the Moment. The Moment Vector. Moment of a Force About a Line. Couples. Equivalent Systems. Representing Systems by Equivalent Systems.

5. Objects in Equilibrium.

The Equilibrium Equations. Two-Dimensional Applications. Statically Indeterminate Objects. Three-Dimensional Applications. Two-Force and Three-Force Members.

6. Structures in Equilibrium.

Trusses. The Method of Joints. The Method of Sections. Frames and Machines.

7. Centroids and Moments of Inertia.

Centroids. Centroids of Areas. Centroids of Composite Areas. Distributed Loads. Centroids of Volumes and Lines. Centers of Mass. Centers of Mass of Composite Objects. Moments of Inertia of Areas. Parallel-Axis Theorems.

8. Friction.

Theory of Dry Friction. Applications.

9. Measures of Stress and Strain.

Stresses. Strains.

10. Axially Loaded Bars.

Stresses in Prismatic Bars. Strains in Prismatic Bars. Statically Indeterminate Problems. Nonprismatic Bars and Distributed Loads. Thermal Strains. Material Behavior. Design Issues.

11. Torsion.

Pure Shear Stress. Torsion of Prismatic Circular Bars. Statically Indeterminate Problems. Nonprismatic Bars and Distributed Loads.

12. States of Stress.

Components of Stress. Transformations of Plane Stress. Mohr's Circle for Plane Stress. Principle Stresses in Three Dimensions. Design Issues: Pressure Vessels.

13. States of Strain and the Stress-Strain Relations.

Components of Strain. Transformations of Plane Strain. Stress-Strain Relations.

14. Internal Forces and Moments in Beams.

Axial Force, Shear Force, and Bending Moment. Shear Force and Bending Moment Diagrams. Equations Relating distributed Load, Shear force, and Bending Moment.

15. Stresses in Beams.

Normal Stress. Shear Stress.

16. Deflections of Beams.

Determination of the Deflection. Statically Indeterminate Beams. Method of Superposition.

17. Buckling of Columns.

Euler Buckling Load. Other End Conditions.

Appendix A: Review of Mathematics.

Algebra. Trigonometry. Derivatives. Integrals. Taylor Series. Vector Analysis.

Appendix B: Properties of Areas and Lines.

Areas. Lines.

Appendix C: Properties of Volumes and Homogeneous Objects.


Appendix D: Material Properties.


Appendix E: Deflections and Slopes of Prismatic Beams.


Answers to Even-Numbered Problems.


Index.

Preface

Our original objective in writing this book was to present the foundations and applications of statics and mechanics of materials as we do in the classroom. We used many sequences of figures, emulating the gradual development of a figure by a teacher explaining a concept. We stressed the importance of visual analysis in gaining understanding, especially through the use of free-body diagrams. Because inspiration is so conducive to learning, we based many of our examples and problems on a variety of modern engineering applications.

Key Series Features

This volume completes our series in Engineering Mechanics that includes

• Engineering Mechanics–Statics, Third Edition, by Bedford and Fowler
• Engineering Mechanics–Dynamics, Third Edition, by Bedford and Fowler
• Engineering Mechanics–Statics & Dynamics, Third Edition, by Bedford and Fowler
• Engineering Mechanics–Statics Principles, by Bedford and Fowler
• Engineering Mechanics–Dynamics Principles, by Bedford and Fowler
• Engineering Mechanics–Statics & Dynamics Principles, by Bedford and Fowler
• Mechanics of Materials by Bedford and Liechti
• Statics and Mechanics of Materials by Bedford, Fowler, and Liechti (this volume)

Positive responses from users and reviewers have led us to retain the basic organization, content, and features. During our preparation of this volume, we examined how we presented each concept, example, figure, summary statement, and problem. Where necessary, we made changes, additions, or deletions to simplify and clarify the presentation. This volume features

• Problems that contain elements of engineering design have been marked with a new D icon.
• We have added new examples where users indicated more were needed. Many of the new examples continue our emphasis on realistic and motivational applications and engineering design.
• New sets of Study Questions appear after most sections to help students check their retention of key concepts.
• Each example is clearly labeled for its teaching purpose.
• A redesigned text and added photographs throughout help students connect the text real world applications and situations.

Examples that Teach

The Strategy/Solution/Discussion framework employed by most of our examples is designed to emphasize the critical importance of good problem-solving skills. Our objective is to teach students how to approach problems and critically judge the results.

Commitment to Students and Instructors

In preparing this volume and the accompanying solutions manual, we have taken precautions to ensure accuracy to the best of our ability. We have each solved the new problems in an effort to be sure that their answers are correct and that they are of an appropriate level of difficulty. Karim Nohra of the University of South Florida also checked the text, examples, problems and solutions manual. Any errors that remain are the responsibility of the authors.

We welcome communication from students and instructors concerning errors or areas for improvement. Our mailing address is Department of Aerospace Engineering and Engineering Mechanics, University of Texas at Austin, Austin, Texas 78712. Our electronic mail address is [e-mail].

Supplements

Instructor's Solutions Manual This supplement, available to instructors contains complete solutions to all of the problems and several sample syllabi. Each solution comes with problem statement as well as associated artwork.

Study Packs are designed to give students the tools to improve their mechanics study skills. They consists of three study components: a free body-diagram workbook, a Visualization CD based on Working Model Software, and an access code to a website with 500 sample Statics and Dynamics problems and solutions.

• Free-Body Diagram Workbook prepared by Peter Schiavone of the University of Alberta. This workbook begins with a tutorial on free body diagrams and then includes 50 practice problems of progressing difficulty with complete solutions. Further 'strategies and tips' help students understand how to use the diagrams in solving the accompanying problems.
• Working Model CD contains 25 pre-set simulations of Statics examples that include questions for further exploration. Simulations are powered by the Working Model Engine and were created with actual artwork from the text to enhance their correlation with the text.
• Password-Protected Website contains 500 sample Statics and Dynamics problems for students to study. All problems are supplemental and do not appear in this volume. Student passwords are printed on the inside cover of the Free-Body Diagram Workbook. To access this site, students should go to http://www.prenhall.com/bedford and follow the on-line directions to register.

The Study Packs are available as a stand-alone item or can be bundled with this volume at additional cost. Order stand-alone Study Packs with the ISBN 0-13-061574-9.

MATLAB ^®/Mathcad ^® Tutorials Twenty tutorials showing how to use computational software in engineering mechanics. Each tutorial discusses a basic mechanics concept, and then shows how to solve a specific problem related to this concept using MATLAB/Mathcad. There are twenty tutorials each for MATLAB and Mathcad, and are available in PDF format from the password-protected area of the Bedford website. Passwords appear in each student study pack. Worksheets were developed by Ronald Larsen and Stephen Hunt of Montana State University-Bozeman.

Website— http://www.prenhall.com/bedford contains mechanics multiple-choice and True/False quizzes developed by Karim Nohra of the University of South Florida. Web Assessment, MATLAB/Mathcad tutorials, and Study Pack questions and solutions are all available at the password protected part of this website. Passwords for the protected portion are printed in the Statics Study Pack.

ADAMS Simulations for Dynamics Mechanical Dynamics, Inc. has created over 100 simulations of problems from Dynamics using their ADAMS simulation/protyping software. Professors and students can simulate an( observe the effects of changing parameters in systems and gain deeper insight into their behavior. Simulations also come with an accompanying avi 'movie' file. Files are located at the password-protected part of the website. Students should use their study pack passwords and professors should contact their Prentice Hall representative for professor access. Qualified adopters may also be able to obtain free site licenses. Contact [e-mail] for more information.

Web Assessment Software PH Grade Assist lets students solve static problems with randomized variables so each student solves a slightly different problem. For more information and pricing, contact your local Prentice Hall representative or visit http://www.prenhall.com/bedford and choose Engineering Mechanics.