1 Stress 3
Chapter Objectives 3
1.1 Introduction 3
1.2 Equilibrium of a Deformable Body 4
1.3 Stress 22
1.4 Average Normal Stress in an Axially Loaded Bar 24
1.5 Average Shear Stress 32
1.6 Allowable Stress Design 46
1.7 Limit State Design 48
2 Strain 67
Chapter Objectives 67
2.1 Deformation 67
2.2 Strain 68
3 Mechanical Properties of Materials 83
Chapter Objectives 83
3.1 The Tension and Compression Test 83
3.2 The Stress—Strain Diagram 85
3.3 Stress—Strain Behavior of Ductile and Brittle Materials 89
3.4 Hooke’s Law 92
3.5 Strain Energy 94
3.6 Poisson’s Ratio 104
3.7 The Shear Stress—Strain Diagram 106
*3.8 Failure of Materials Due to Creep and Fatigue 109
4 Axial Load 121
Chapter Objectives 121
4.1 Saint-Venant’s Principle 121
4.2 Elastic Deformation of an Axially Loaded Member 124
4.3 Principle of Superposition 138
4.4 Statically Indeterminate Axially Loaded Member 139
4.5 The Force Method of Analysis for Axially Loaded Members 145
4.6 Thermal Stress 153
4.7 Stress Concentrations 160
*4.8 Inelastic Axial Deformation 164
*4.9 Residual Stress 166
5 Torsion 181
Chapter Objectives 181
5.1 Torsional Deformation of a Circular Shaft 181
5.2 The Torsion Formula 184
5.3 Power Transmission 192
5.4 Angle of Twist 204
5.5 Statically Indeterminate Torque-Loaded Members 218
*5.6 Solid Noncircular Shafts 225
*5.7 Thin-Walled Tubes Having Closed Cross Sections 228
5.8 Stress Concentration 238
*5.9 Inelastic Torsion 241
*5.10 Residual Stress 243
6 Bending 259
Chapter Objectives 259
6.1 Shear and Moment Diagrams 259
6.2 Graphical Method for Constructing Shear and Moment Diagrams 266
6.3 Bending Deformation of a Straight Member 285
6.4 The Flexure Formula 289
6.5 Unsymmetric Bending 306
*6.6 Composite Beams 316
*6.7 Reinforced Concrete Beams 319
*6.8 Curved Beams 323
6.9 Stress Concentrations 330
*6.10 Inelastic Bending 339
7 Transverse Shear 363
Chapter Objectives 363
7.1 Shear in Straight Members 363
7.2 The Shear Formula 365
7.3 Shear Flow in Built-Up Members 382
7.4 Shear Flow in Thin-Walled Members 391
*7.5 Shear Center for Open Thin-Walled Members 396
8 Combined Loadings 409
Chapter Objectives 409
8.1 Thin-Walled Pressure Vessels 409
8.2 State of Stress Caused by Combined Loadings 416
9 Stress Transformation 441
Chapter Objectives 441
9.1 Plane-Stress Transformation 441
9.2 General Equations of Plane-Stress Transformation 446
9.3 Principal Stresses and Maximum In-Plane Shear Stress 449
9.4 Mohr’s Circle–Plane Stress 465
9.5 Absolute Maximum Shear Stress 477
10 Strain Transformation 489
Chapter Objectives 489
10.1 Plane Strain 489
10.2 General Equations of Plane-Strain Transformation 490
*10.3 Mohr’s Circle–Plane Strain 498
*10.4 Absolute Maximum Shear Strain 506
10.5 Strain Rosettes 508
10.6 Material-Property Relationships 512
*10.7 Theories of Failure 524
11 Design of Beams and Shafts 541
Chapter Objectives 541
11.1 Basis for Beam Design 541
11.2 Prismatic Beam Design 544
*11.3 Fully Stressed Beams 558
*11.4 Shaft Design 562
12 Deflection of Beams and Shafts 573
Chapter Objectives 573
12.1 The Elastic Curve 573
12.2 Slope and Displacement by Integration 577
*12.3 Discontinuity Functions 597
*12.4 Slope and Displacement by the Moment-Area Method 608
12.5 Method of Superposition 623
12.6 Statically Indeterminate Beams and Shafts 631
12.7 Statically Indeterminate Beams and Shafts–Method of Integration 632
*12.8 Statically Indeterminate Beams and Shafts–Moment-Area Method 637
12.9 Statically Indeterminate Beams and Shafts–Method of Superposition 643
13 Buckling of Columns 661
Chapter Objectives 661
13.1 Critical Load 661
13.2 Ideal Column with Pin Supports 664
13.3 Columns Having Various Types of Supports 670
*13.4 The Secant Formula 682
*13.5 Inelastic Buckling 688
*13.6 Design of Columns for Concentric Loading 696
*13.7 Design of Columns for Eccentric Loading 707
14 Energy Methods 719
Chapter Objectives 719
14.1 External Work and Strain Energy 719
14.2 Elastic Strain Energy for Various Types of Loading 724
14.3 Conservation of Energy 737
14.4 Impact Loading 744
*14.5 Principle of Virtual Work 755
*14.6 Method of Virtual Forces Applied to Trusses 759
*14.7 Method of Virtual Forces Applied to Beams 766
*14.8 Castigliano’s Theorem 775
*14.9 Castigliano’s Theorem Applied to Trusses 777
*14.10 Castigliano’s Theorem Applied to Beams 780
Appendix
A. Geometric Properties of an Area
B. Geometric Properties of Structural Shapes
C. Slopes and Deflections of Beams
Fundamental Problems Partial Solutions and Answers
Answers for Selected Problems
Index
(*) Sections of the book that contain more advanced material are indicated by a star. Time permitting, some of these topics may be included in the course. Furthermore, this material provides a suitable reference for basic principles when it is covered in other courses, and it can be used as a basis for assigning special projects.
R.C. Hibbeler graduated from the University of Illinois at Urbana with a BS in Civil Engineering (major in Structures) and an MS in Nuclear Engineering. He obtained his PhD in Theoretical and Applied Mechanics from Northwestern University.
Hibbeler’s professional experience includes postdoctoral work in reactor safety and analysis at Argonne National Laboratory, and structural and stress analysis work at Chicago Bridge and Iron, as well as Sargent and Lundy in Chicago. He has practiced engineering in Ohio, New York, and Louisiana.
Hibbeler currently teaches both civil and mechanical engineering courses at the University of Louisiana, Lafayette. In the past he has taught at the University of Illinois at Urbana, Youngstown State University, Illinois Institute of Technology, and Union College.
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