Mechanics of Materials

The core concepts of equilibrium, force-temperature-deformation behavior of materials, and geometry of deformation are central to a students understanding of mechanics of materials. The third edition of Roy Craig’s Mechanics of Materials maintains its signature clear focus on these core concepts while showing students how to approach and solve problems with his four-step problem solving methodology. With newly revised and updated homework problems, this edition brings on an award-winning software program, MD Solids, to reinforce visualization using animations, tutorials, and examples. In addition, new chapter summary tables help readers check their understanding of key concepts and key equations to increase student retention.  

Table of Contents:
1 Introduction to Mechanics of Materials 1 1.1 What Is Mechanics of Materials? 1 (Includes Color-Photo Insert) 1.2 The Fundamental Equations of Deformable-Body Mechanics 4 1.3 Problem-Solving Procedures 6 1.4 Review of Static Equilibrium; Equilibrium of Deformable Bodies 8 1.5 Problems 17 Chapter 1 Review 21 2 Stress and Strain; Introduction to Design 22 2.1 Introduction 22 2.2 Normal Stress 23 2.3 Extensional Strain; Thermal Strain 31 2.4 Stress-Strain Diagrams; Mechanical Properties of Materials 37 2.5 Elasticity and Plasticity; Temperature Effects 45 2.6 Linear Elasticity; Hooke’s Law and Poisson’s Ratio 48 2.7 Shear Stress and Shear Strain; Shear Modulus 51 2.8 Introduction to Design—Axial Loads and Direct Shear 57 2.9 Stresses on an Inclined Plane in an Axially Loaded Member 65 2.10 Saint-Venant’s Principle 67 2.11 Hooke’s Law for Plane Stress; The Relationship Between E and G 69 2.12 General Definitions of Stress and Strain 72 *2.13 Cartesian Components of Stress; Generalized Hooke’s Law for Isotropic Materials 82 *2.14 Mechanical Properties of Composite Materials 87 2.15 Problems 89 Chapter 2 Review 113 3 Axial Deformation 118 3.1 Introduction 118 3.2 Basic Theory of Axial Deformation 118 3.3 Examples of Nonuniform Axial Deformation 126 3.4 Statically Determinate Structures 136 3.5 Statically Indeterminate Structures 143 3.6 Thermal Effects on Axial Deformation 152 3.7 Geometric ‘‘Misfits,’’ 163 3.8 Displacement-Method Solution of Axial-Deformation Problems 168 *3.9 Force-Method Solution of Axial- Deformation Problems 180 *3.10 Introduction to the Analysis of Planar Trusses 189 *3.11 Inelastic Axial Deformation 197 3.12 Problems 209 Chapter 3 Review 234 4 Torsion 237 4.1 Introduction 237 4.2 Torsional Deformation of Circular Bars 238 4.3 Torsion of Linearly Elastic Circular Bars 241 4.4 Stress Distribution in Circular Torsion Bars; Torsion Testing 249 4.5 Statically Determinate Assemblages of Uniform Torsion Members 253 4.6 Statically Indeterminate Assemblages of Uniform Torsion Members 258 *4.7 Displacement-Method Solution of Torsion Problems 266 4.8 Power-Transmission Shafts 272 *4.9 Thin-Wall Torsion Members 275 *4.10 Torsion of Noncircular Prismatic Bars 280 *4.11 Inelastic Torsion of Circular Rods 284 4.12 Problems 290 Chapter 4 Review 307 5 Equilibrium of Beams 309 5.1 Introduction 309 5.2 Equilibrium of Beams Using Finite Free-Body Diagrams 314 5.3 Equilibrium Relationships Among Loads, Shear Force, and Bending Moment 318 5.4 Shear-Force and Bending-Moment Diagrams: Equilibrium Method 321 5.5 Shear-Force and Bending-Moment Diagrams: Graphical Method 326 *5.6 Discontinuity Functions to Represent Loads, Shear, and Moment 333 5.7 Problems 340 Chapter 5 Review 348 6 Stresses in Beams 351 6.1 Introduction 351 6.2 Strain-Displacement Analysis 354 6.3 Flexural Stress in Linearly Elastic Beams 360 6.4 Design of Beams for Strength 369 6.5 Flexural Stress in Nonhomogeneous Beams 375 *6.6 Unsymmetric Bending 383 *6.7 Inelastic Bending of Beams 392 6.8 Shear Stress and Shear Flow in Beams 402 6.9 Limitations on the Shear-Stress Formula 408 6.10 Shear Stress in Thin-Wall Beams 411 6.11 Shear in Built-Up Beams 421 *6.12 Shear Center 425 6.13 Problems 432 Chapter 6 Review 460 7 Deflection of Beams 463 7.1 Introduction 463 7.2 Differential Equations of the Deflection Curve 464 7.3 Slope and Deflection by Integration—Statically Determinate Beams 470 7.4 Slope and Deflection by Integration—Statically Indeterminate Beams 483 *7.5 Use of Discontinuity Functions to Determine Beam Deflections 488 7.6 Slope and Deflection of Beams: Superposition Method 495 *7.7 Slope and Deflection of Beams: Displacement Method 513 7.8 Problems 520 Chapter 7 Review 539 8 Transformation of Stress and Strain; Mohr’s Circle 541 8.1 Introduction 541 8.2 Plane Stress 542 8.3 Stress Transformation for Plane Stress 544 8.4 Principal Stresses and Maximum Shear Stress 551 8.5 Mohr’s Circle for Plane Stress 557 8.6 Triaxial Stress; Absolute Maximum Shear Stress 564 8.7 Plane Strain 571 8.8 Transformation of Strains in a Plane 572 8.9 Mohr’s Circle for Strain 576 8.10 Measurement of Strain; Strain Rosettes 582 *8.11 Analysis of Three-Dimensional Strain 587 8.12 Problems 588 Chapter 8 Review 601 9 Pressure Vessels; Stresses Due to Combined Loading 604 9.1 Introduction 604 9.2 Thin-Wall Pressure Vessels 605 9.3 Stress Distribution in Beams 611 9.4 Stresses Due to Combined Loads 616 9.5 Problems 625 Chapter 9 Review 633 10 Buckling of Columns 635 10.1 Introduction 635 10.2 The Ideal Pin-Ended Column; Euler Buckling Load 638 10.3 The Effect of End Conditions on Column Buckling 644 *10.4 Eccentric Loading; The Secant Formula 651 *10.5 Imperfections in Columns 657 *10.6 Inelastic Buckling of Ideal Columns 658 10.7 Design of Centrally Loaded Columns 662 10.8 Problems 668 Chapter 10 Review 681 11 Energy Methods 683 11.1 Introduction 683 11.2 Work and Strain Energy 684 11.3 Elastic Strain Energy for Various Types of Loading 691 11.4 Work-Energy Principle for Calculating Deflections 697 11.5 Castigliano’s Second Theorem; The Unit-Load Method 702 *11.6 Virtual Work 713 *11.7 Strain-Energy Methods 717 *11.8 Complementary-Energy Methods 722 *11.9 Dynamic Loading; Impact 732 11.10 Problems 737 Chapter 11 Review 751 12 Special Topics Related to Design 753 12.1 Introduction 753 12.2 Stress Concentrations 753 *12.3 Failure Theories 760 *12.4 Fatigue and Fracture 768 12.5 Problems 772 Chapter 12 Review 777 A Numerical Accuracy; Approximations A-1 A.1 Numerical Accuracy; Significant Digits A-1 A.2 Approximations A-2 B Systems of Units B-1 B.1 Introduction B-1 B.2 SI Units B-1 B.3 U.S. Customary Units; Conversion of Units B-3 C Geometric Properties of Plane Areas C-1 C.1 First Moments of Area; Centroid C-1 C.2 Moments of Inertia of an Area C-4 C.3 Product of Inertia of an Area C-8 C.4 Area Moments of Inertia About Inclined Axes; Principal Moments of Inertia C-10 D Section Properties of Selected Structural Shapes D-1 D.1 Properties of Steel Wide-Flange (W) Shapes (U.S. Customary Units) D-2 D.2 Properties of Steel Wide-Flange (W) Shapes (SI Units) D-3 D.3 Properties of American Standard (S) Beams (U.S. Customary Units) D-4 D.4 Properties of American Standard (C) Channels (U.S. Customary Units) D-5 D.5 Properties of Steel Angle Sections—Equal Legs (U.S. Customary Units) D-6 D.6 Properties of Steel Angle Sections—Unequal Legs (U.S. Customary Units) D-7 D.7 Properties of Standard-Weight Steel Pipe (U.S. Customary Units) D-8 D.8 Properties of Structural Lumber (U.S. Customary Units) D-9 D.9 Properties of Aluminum Association Standard I-Beams (U.S. Customary Units) D-10 D.10 Properties of Aluminum Association Standard Channels (U.S. Customary Units) D-11 E Deflections and Slopes of Beams; Fixed-End Actions E-1 E.1 Deflections and Slopes of Cantilever Uniform Beams E-1 E.2 Deflections and Slopes of Simply Supported Uniform Beams E-3 E.3 Fixed-End Actions for Uniform Beams E-4 F Mechanical Properties of Selected Engineering Materials F-1 F.1 Specific Weight and Mass Density F-2 F.2 Modulus of Elasticity Shear Modulus of Elasticity and Poisson’s Ratio F-3 F.3 Yield Strength, Ultimate Strength, Percent Elongation in 2 Inches and Coefficient of Thermal Expansion F-4 G Computational Mechanics G-1 G.1 MDSolids G-1 Answers to Selected Odd-numbered Problems Ans-1 References R-1 Index I-1

About the Author :
ROY R. CRAIG JR., PHD, is Professor Emeritus of Aerospace Engineering and Engineering Mechanics at The University of Texas at Austin. He has received numerous teaching awards and has worked in industry at Boeing, NASA, and Exxon Production Research Corporation, among others.