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[资源] Advanced mechanics of materials 5Ed.

PREFACE

This fifth edition represents a major revision of the fourth edition. However, as
in previous editions, the blend of analysis, qualified approximations, and
judgements based on practical experience is maintained. Each topic is developed from
basic principles so that the applicability and limitations of the methods employed
are clear. Introductory statements in each chapter serve as guidelines for the
reader to the topics that are discussed. The topics are divided into three major
parts: Part I—Fundamental Concepts; Part II—Classical Topics in Advanced
Mechanics; and Part III—Selected Advanced Topics.
Part I, Chapters 1-5, includes topics from elasticity, plasticity, and energy
methods that are important in the remainder of the book. In Chapter 1, the role
and the limits of design are discussed. Basic concepts of one-dimensional load-
stress, load-deflection, and stress-strain diagrams are introduced. A discussion of
the tension test and associated material properties is presented, followed by an
introduction to failure theories. These concepts are followed, in Chapter 2, by the
theories of stress and strain, and by strain measurements (strain rosettes) and,
in Chapter 3, by the theory of linear stress-strain-temperature relations. The
discussion of anisotropic materials has been expanded, and example problems on
orthotropic material behavior are given. Student problems for anisotropic
materials are also included. Chapter 4 contains much new material related to inelastic
(nonlinear) behavior and a broader treatment of yield criteria, including elastic-
plastic behavior of beams, strain-hardening effects in bars, and residual stresses in
elastic-plastic bars after unloading. The application of energy methods, Chapter 5,
is expanded to include an in-depth discussion of the dummy-load method used by
structuraLengineers and its relation to the Castigliano method. Additional worked
examples and many new problems have been added. (In this edition, problems have
been placed at the end of each Chapter, rather than at the end of each section.)
Part II, Chapters 6-12, treats some classical topics of advanced mechanics.
Torsion is treated in Chapter 6, including new examples and problems. In
addition, a finite difference solution of the rectangular cross section bar is presented.
An example of limit analysis and residual stresses in a circular cross section shaft
is also included. In Chapters 7 to 9, the three topics of unsymmetrical bending,
shear center, and curved beams are examined on a rigorous basis, and limitations
on existing analyses are indicated. A presentation of beams on elastic foundations,
plus new problems and references, is given in Chapter 10. Some minor
clarifications for the thick-wall cylinder and many new student problems are given in
Chapter 11. In Chapter 12, the topic of stability of columns is expanded
considerably, and a wide range of practical example problems and student exercises is
included.
Part III, Chapters 13-19, presents the more advanced topics of flat plates, stress
concentrations, fracture mechanics, fatigue, creep (time-dependent deformations),
contact stresses, and the finite element method. The linear theory of flat plates is
given in Chapter 13, including some illustrative problems and a collection of
student exercises. The level is appropriate as an introduction for master-level students
and for practicing engineers. Chapter 14 collects, in an integrated manner, material
on stress concentrations previously presented in parts of Chapters 3, 12, and 13 of
the fourth edition. New examples and exercise problems have been added, as well
as some new charts of stress concentration factors for rectangular cross section
beams. The topic of fracture mechanics is introduced in Chapter 15; it includes
material previously given in Chapters 3 and 12 of the fourth edition and a brief
discussion of other factors, such as elastic-plastic fracture, crack-growth analysis, load
spectra and stress history, testing, and experimental data interpretation. A number
of up-to-date books and papers are referenced. Progressive fracture(fatigue) is
discussed in Chapter 16, including additional problems and references. An extended
discussion of creep is presented in Chapter 17, including creep of metals and non-
metals (concrete, asphalt, and wood). Chapter 18, contact stresses, is essentially
unchanged from Chapter 14 of the fourth edition. Chapter 19, the finite element
method, is a completely rewritten treatment of Chapter 15 of the fourth edition.
It includes discussions of the constant strain triangular element, the bilinear
rectangular element, the linear isoparametric quadrilateral element, and the plane
frame element. Example problems and exercise problems are included.
As a result of the new material and problems that have been added, this
edition is larger than its predecessors. Consequently, it provides a greater choice
of topics for study. It also has the advantage that the book can be used over a
lifetime of practice, as a reference to topics of lasting importance in engineering.
The book contains more material than can be covered in a one-quarter or a one-
semester course. It is, however, with the proper selection of topics, suitable for a
one-semester (one-quarter) course at either the senior level or the first-semester
graduate level, for a two-semester (two- or three-quarter) course sequence, or as a
reference work in several courses in mechanics.
The computer program listings in the fourth edition have been omitted from the
current edition. However, revised versions of the programs from the fourth edition
and new programs for applications in this edition are available on request from one
of the authors (R. J. Schmidt, Department of Civil and Architectural Engineering,
Box 3295, University of Wyoming, Laramie, WY 82071).
We thank Charity Robey, Wiley engineering editor, for her expert help and
advice during the development of this edition. We also greatly appreciate the help of
Suzanne Ingrao, with the difficult task of galley and page proof editing. We thank
the reviewers of the preliminary format and content of the fifth edition for their
constructive criticism and suggestions for improving the fourth edition. These
reviewers are Stanley Chen, Arizona State University; Donald DaDeppo, University
of Arizona; D. W. Haines, Manhattan College; Loren D. Lutes, Texas A. & M.
University; Esmet M. Kamil, Pratt Institute; and Thomas A. Lenox, U.S. Military
Academy, West Point, NY. We thank especially the reviewers of the draft
manuscript for their helpful suggestions. These reviewers are J. A. M. Boulet, University
of Tennessee-Knoxville; Ray W. James, Texas A. & M. University; A. P. Moser,
Utah State University; William A. Nash, University of Massachusetts-Amherst;
and Sam Y. Zamrik, Pennsylvania State University. We also acknowledge the
contribution of Travis Finch for the artwork in Figs. 12.12 and 18.1.
Finally, we welcome comments, suggestions, questions, and corrections from the
reader. They may be sent to Arthur P. Boresi, Department of Civil and Architectural
Engineering, Box 3295, University of Wyoming, Laramie, WY 82071.
Arthur P. Boresi
Richard J. Schmidt
Omar M. Sidebottom

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[ Last edited by zhq025 on 2008-1-16 at 10:34 ]

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