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 |  موضوع: كتاب Applied Strength of Materials الجمعة 07 ديسمبر 2018, 10:26 pm | |
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أخوانى فى الله
أحضرت لكم كتاب
Applied Strength of Materials
Robert L. Mott
Joseph A. Untener
ويتناول الموضوعات الأتية :
Contents
Preface xi
1 Basic Concepts in Strength of Materials 1
The Big Picture 2
1–1 Objective of This Book: To Ensure Safety 6
1–2 Objectives of This Chapter 15
1–3 Problem-Solving Procedure 15
1–4 Basic Unit Systems 16
1–5 Relationship among Mass, Force, and Weight 18
1–6 Concept of Stress 20
1–7 Direct Normal Stress 22
1–8 Stress Elements for Direct Normal Stresses 25
1–9 Concept of Strain 26
1–10 Direct Shear Stress 27
1–11 Stress Elements for Shear Stresses 33
1–12 Preferred Sizes and Screw Threads 33
1–13 Structural Shapes 34
1–14 Experimental and Computational Stress Analysis 42
1–15 Review of the Fundamentals of Statics 46
2 Design Properties of Materials 70
The Big Picture 71
2–1 Objectives of This Chapter 73
2–2 Design Properties of Materials 73
2–3 Steel 89
2–4 Cast Iron 97
2–5 Aluminum 98
2–6 Copper, Brass, and Bronze 100
2–7 Zinc-, Magnesium-, Titanium-, and Nickel-Based Alloys 101vi Contents
2–8 Nonmetals in Engineering Design 102
2–9 Wood 102
2–10 Concrete 104
2–11 Plastics 106
2–12 Composites 109
2–13 Materials Selection 123
3 Direct Stress, Deformation, and Design 133
The Big Picture 134
3–1 Objectives of This Chapter 137
3–2 Design of Members under Direct Tension or Compression 138
3–3 Design Normal Stresses 138
3–4 Design Factor 139
3–5 Design Approaches and Guidelines for Design Factors 142
3–6 Methods of Computing Design Stress 146
3–7 Elastic Deformation in Tension and Compression Members 151
3–8 Deformation due to Temperature Changes 158
3–9 Thermal Stress 162
3–10 Members Made of More Than One Material 165
3–11 Stress Concentration Factors for Direct Axial Stresses 169
3–12 Bearing Stress 173
3–13 Design Bearing Stress 177
4 Design for Direct Shear, Torsional Shear, and Torsional
Deformation 199
The Big Picture 200
4–1 Objectives of This Chapter 205
4–2 Design for Direct Shear Stress 206
4–3 Torque, Power, and Rotational Speed 210
4–4 Torsional Shear Stress in Members with Circular Cross Sections 214
4–5 Development of the Torsional Shear Stress Formula 217
4–6 Polar Moment of Inertia for Solid Circular Bars 219
4–7 Torsional Shear Stress and Polar Moment of Inertia for Hollow Circular Bars 219
4–8 Design of Circular Members under Torsion 222
4–9 Comparison of Solid and Hollow Circular Members 225
4–10 Stress Concentrations in Torsionally Loaded Members 229
4–11 Twisting: Elastic Torsional Deformation 236
4–12 Torsion in Noncircular Sections 247Contents vii
5 Shearing Forces and Bending Moments in Beams 269
The Big Picture 270
5–1 Objectives of This Chapter 277
5–2 Beam Loading, Supports, and Types of Beams 277
5–3 Reactions at Supports 286
5–4 Shearing Forces and Bending Moments for Concentrated Loads 290
5–5 Guidelines for Drawing Beam Diagrams for Concentrated Loads 296
5–6 Shearing Forces and Bending Moments for Distributed Loads 302
5–7 General Shapes Found in Bending Moment Diagrams 309
5–8 Shearing Forces and Bending Moments for Cantilever Beams 310
5–9 Beams with Linearly Varying Distributed Loads 312
5–10 Free-Body Diagrams of Parts of Structures 313
5–11 Mathematical Analysis of Beam Diagrams 319
5–12 Continuous Beams: Theorem of Three Moments 330
6 Centroids and Moments of Inertia of Areas 349
The Big Picture 350
6–1 Objectives of This Chapter 353
6–2 Concept of Centroid: Simple Shapes 353
6–3 Centroid of Complex Shapes 354
6–4 Concept of Moment of Inertia of an Area 359
6–5 Moment of Inertia of Composite Shapes Whose
Parts Have the Same Centroidal Axis 361
6–6 Moment of Inertia for Composite Shapes: General
Case—Use of the Parallel Axis Theorem 364
6–7 Mathematical Defnition of Moment of Inertia 367
6–8 Composite Sections Made from Commercially Available Shapes 368
6–9 Moment of Inertia for Shapes with All Rectangular Parts 372
6–10 Radius of Gyration 373
6–11 Section Modulus 377
7 Stress due to Bending 391
The Big Picture 392
7–1 Objectives of This Chapter 395
7–2 Flexure Formula 396
7–3 Conditions on the Use of the Flexure Formula 399
7–4 Stress Distribution on a Cross Section of a Beam 401
7–5 Derivation of the Flexure Formula 403viii Contents
7–6 Applications: Analysis of Stresses in Beams 405
7–7 Applications: Beam Design and Design Stresses 409
7–8 Section Modulus and Design Procedures 411
7–9 Stress Concentrations 418
7–10 Flexural Center or Shear Center 423
7–11 Preferred Shapes for Beam Cross Sections 427
7–12 Design of Beams to Be Made from Composite Materials 432
8 Shearing Stresses in Beams 455
The Big Picture 456
8–1 Objectives of This Chapter 460
8–2 Importance of Shearing Stresses in Beams 461
8–3 General Shear Formula 462
8–4 Distribution of Shearing Stress in Beams 469
8–5 Development of the General Shear Formula 475
8–6 Special Shear Formulas 478
8–7 Design for Shear 482
8–8 Shear Flow 484
9 Deflection of Beams 497
The Big Picture 498
9–1 Objectives of This Chapter 504
9–2 Need for Considering Beam De?ections 504
9–3 General Principles and Defnitions of Terms 506
9–4 Beam De?ections Using the Formula Method 509
9–5 Comparison of the Manner of Support for Beams 515
9–6 Superposition Using De?ection Formulas 521
9–7 Successive Integration Method 531
9–8 Moment–Area Method 544
10 Combined Stresses 575
The Big Picture 576
10–1 Objectives of This Chapter 579
10–2 Stress Element 580
10–3 Stress Distribution Created by Basic Stresses 582
10–4 Creating the Initial Stress Element 584Contents ix
10–5 Combined Normal Stresses 590
10–6 Combined Normal and Shear Stresses 597
10–7 Equations for Stresses in Any Direction 603
10–8 Maximum and Minimum Stresses 606
10–9 Mohr’s Circle for Stress 609
10–10 Stress Condition on Selected Planes 625
10–11 Special Case in Which Both Principal Stresses Have the Same Sign 627
10–12 Use of Strain-Gage Rosettes to Determine Principal Stresses 633
11 Columns 654
The Big Picture 655
11–1 Objectives of This Chapter 659
11–2 Slenderness Ratio 659
11–3 Transition Slenderness Ratio 664
11–4 Euler Formula for Long Columns 665
11–5 J.B. Johnson Formula for Short Columns 666
11–6 Summary: Buckling Formulas 667
11–7 Design Factors for Columns and Allowable Load 669
11–8 Summary: Method of Analyzing Columns 670
11–9 Column Analysis Spreadsheet 674
11–10 Effcient Shapes for Column Cross Sections 675
11–11 Specifcations of the AISC 676
11–12 Specifcations of the Aluminum Association 679
11–13 Noncentrally Loaded Columns 680
12 Pressure Vessels 695
The Big Picture 696
12–1 Objectives of This Chapter 699
12–2 Distinction between Thin-Walled and Thick-Walled Pressure Vessels 699
12–3 Thin-Walled Spheres 701
12–4 Thin-Walled Cylinders 703
12–5 Thick-Walled Cylinders and Spheres 707
12–6 Analysis and Design Procedures for Pressure Vessels 708
12–7 Spreadsheet Aid for Analyzing Thick-Walled Spheres and Cylinders 715
12–8 Shearing Stress in Cylinders and Spheres 716
12–9 Other Design Considerations for Pressure Vessels 719
12–10 Composite Pressure Vessels 722x Contents
13 Connections 728
The Big Picture 729
13–1 Objectives of This Chapter 732
13–2 Modes of Failure for Bolted Joints 733
13–3 Design of Bolted Connections 734
13–4 Riveted Joints 737
13–5 Eccentrically Loaded Riveted and Bolted Joints 738
13–6 Welded Joints with Concentric Loads 743
Appendix 752
Answers to Selected Problems 812
Index 827
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