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Machine Elements in Mechanical Design,9780138414467
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Machine Elements in Mechanical Design

by ;
Edition:
3rd
ISBN13:

9780138414467

ISBN10:
0138414467
Media:
Hardcover
Pub. Date:
1/1/1999
Publisher(s):
Prentice Hall
List Price: $110.00
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Summary

For courses in Machine Design, Design of Machine Elements, Mechanical Design, and Product Design. Using an exceptionally readable, applied approach to the principles and practice of mechanical design, this text presents the concepts, procedures, data, and decision-analysis techniques students need to design safe, efficient, and workable machine elements and to effectively integrate them into total systems. Hands-on in nature, it features an abundance of thoroughly worked and explained examples and topic-specific and comprehensive integrative reality-based problems and projects. The use of spreadsheets and the latest computational tools and extensive appendices provide realistic up-to-date data and techniques for use in problem solutions and design projects.

Table of Contents

PART I Principles of Design and Stress Analysis 1(220)
1 The Nature of Mechanical Design
2(22)
The Big Picture 3(1)
You Are the Designer 4(1)
1-1 Objectives of This Chapter
4(3)
1-2 The Mechanical Design Process
7(2)
1-3 Skills Needed in Mechanical Design
9(1)
1-4 Functions and Design Requirements
9(1)
1-5 Criteria for Evaluating Machine Design Decisions
10(1)
1-6 Example of the Integration of Machine Elements into a Mechanical Design
11(2)
1-7 Computational Aids in This Book
13(1)
1-8 Design Calculations
13(1)
1-9 Preferred Basic Sizes, Screw Threads, and Standard Shapes
14(6)
1-10 Unit Systems
20(2)
1-11 Distinction among Weight, Force, and Mass
22(1)
References
22(1)
Problems
23(1)
2 Materials in Mechanical Design
24(43)
The Big Picture 25(1)
You Are the Designer 26(1)
2-1 Objectives of This Chapter
26(1)
2-2 Properties of Metals
26(7)
2-3 Classification of Metals and Alloys
33(1)
2-4 Variability of Material Properties Data
34(1)
2-5 Carbon and Alloy Steel
35(3)
2-6 Conditions for Steels and Heat Treatment
38(4)
2-7 Stainless Steels
42(1)
2-8 Structural Steel
43(1)
2-9 Tool Steels
43(1)
2-10 Cast Iron
43(2)
2-11 Powdered Metals
45(1)
2-12 Aluminum
46(1)
2-13 Zinc Alloys
47(1)
2-14 Titanium
48(1)
2-15 Copper, Brass, and Bronze
49(1)
2-16 Nickel-based Alloys
50(1)
2-17 Plastics
50(2)
2-18 Composite Materials
52(12)
References
64(1)
Problems
65(2)
3 Stress and Deformation Analysis
67(45)
The Big Picture 68(1)
You Are the Designer 68(1)
3-1 Objectives of This Chapter
69(1)
3-2 Philosophy of a Safe Design
69(1)
3-3 Representing Streses on a Stress Element
69(1)
3-4 Direct Stresses: Tension and Compression
70(2)
3-5 Deformation under Direct Axial Loading
72(1)
3-6 Direct Shear Stress
72(2)
3-7 Relationship among Torque, Power, and Rotational Speed
74(1)
3-8 Torsional Shear Stress
75(2)
3-9 Torsional Deformation
77(1)
3-10 Torsion in Members Having Noncircular Cross Sections
77(2)
3-11 Torsion in Closed, Thin-walled Tubes
79(1)
3-12 Open Tubes and a Comparison with Closed Tubes
80(1)
3-13 Vertical Shearing Stress
81(2)
3-14 Special Shearing Stress Formulas
83(1)
3-15 Stress Due to Bending
84(2)
3-16 Flexural Center for Beams
86(1)
3-17 Beam Deflections
87(2)
3-18 Equations for Deflected Beam Shape
89(2)
3-19 Beams with Concentrated Bending Moments
91(4)
3-20 Combined Normal Stresses: Superpostion Principle
95(2)
3-21 Stress Concentrations
97(3)
3-22 Notch Sensitivity and Strength Reduction Factor
100(1)
References
101(1)
Problems
101(11)
4 Combined Stresses and Mohr's Circle
112(28)
The Big Picture 113(1)
You Are the Designer 113(2)
4-1 Objectives of This Chapter
115(1)
4-2 General Case of Combined Stress
115(7)
4-3 Mohr's Circle
122(6)
4-4 Mohr's Circle Practice Problems
128(4)
4-5 Case When Both Principal Stresses Have the Same Sign
132(3)
4-6 Mohr's Circle for Special Stress Conditions
135(3)
4-7 Analysis of Complex Loading Conditions
138(1)
Problems
139(1)
5 Design for Different Types of Loading
140(49)
The Big Picture 141(1)
You Are the Designer 142(1)
5-1 Objectives of This Chapter
143(1)
5-2 Types of Loading and Stress Ratio
143(6)
5-3 Endurance Strength
149(1)
5-4 Factors Affecting the Endurance Strength
149(5)
5-5 Estimating Actual Endurance Strength, S(n)
154(3)
5-6 Design for Different Types of Loading
157(1)
5-7 Predicitions of Failure
157(2)
5-8 Design Factors
159(1)
5-9 Methods of Computing Design Factor or Design Stress
160(3)
5-10 General Design Procedure
163(4)
5-11 Design Examples
167(11)
References
178(1)
Problems
178(11)
6 Columns
189(32)
The Big Picture 189(1)
You Are the Designer 190(1)
6-1 Objectives of This Chapter
190(1)
6-2 Properties of the Cross Section of a Column
191(1)
6-3 End Fixity and Effective Length
191(2)
6-4 Slenderness Ratio
193(1)
6-5 Transition Slenderness Ratio
193(1)
6-6 Long Column Analysis: The Euler Formula
194(4)
6-7 Short Column Analysis: The J.B. Johnson Formula
198(2)
6-8 Column Analysis Spreadsheet
200(3)
6-9 Efficient Shapes for Column Cross Sections
203(1)
6-10 The Design of Columns
204(5)
6-11 Crooked Columns
209(1)
6-12 Eccentrically Loaded Columns
210(6)
References
216(6)
Problems
216(5)
PART II Design of a Mechanical Drive 221(378)
7 Belt Drives and Chain Drives
225(31)
The Big Picture 226(2)
You Are the Designer 228(1)
7-1 Objectives of This Chapter
228(1)
7-2 Types of Belt Drives
228(2)
7-3 V-Belt Drives
230(3)
7-4 V-Belt Drive Design
233(8)
7-5 Chain Drives
241(2)
7-6 Design of Chain Drives
243(10)
References
253(1)
Problems
254(2)
8 Kinematics of Gears
256(62)
The Big Picture 257(4)
You Are the Designer 261(1)
8-1 Objectives of This Chapter
262(1)
8-2 Spur Gear Styles
262(1)
8-3 Spur Gear Geometry: Involute-Tooth Form
263(2)
8-4 Spur Gear Nomenclature and Gear-Tooth Features
265(10)
8-5 Interference between Mating Spur Gear Teeth
275(2)
8-6 Velocity Ration and Gear Trains
277(7)
8-7 Helical Gear Geometry
284(5)
8-8 Bevel Gear Geometry
289(5)
8-9 Types of Wormgearing
294(2)
8-10 Geometry of Worms and Wormgears
296(3)
8-11 Typical Geometry of Wormgear Sets
299(4)
8-12 Train Value for Complex Gear Trains
303(2)
8-13 Devising Gear Trains
305(7)
References
312(1)
Problems
313(5)
9 Spur Gear Design
318(74)
The Big Picture 319(1)
You Are the Designer 320(1)
9-1 Objectives of This Chapter
320(1)
9-2 Concepts from Previous Chapters
321(1)
9-3 Forces on Gear Teeth
322(3)
9-4 Gear Manufacture
325(2)
9-5 Gear Quality
327(1)
9-6 Allowable Stress Numbers
328(2)
9-7 Gear Materials
330(7)
9-8 Stresses in Gear Teeth
337(9)
9-9 Selection of Gear Material Based on Bending Stess
346(5)
9-10 Pitting Resistance of Gear Teeth
351(4)
9-11 Selection of Gear Material Based on Contact Stress
355(5)
9-12 Design of Spur Gears
360(5)
9-13 Gear Design for the Metric Module System
365(2)
9-14 Computer-aided Spur Gear Design and Analysis
367(4)
9-15 Use of the Spur Gear Design Spreadsheet
371(2)
9-16 Power-transmitting Capacity
373(10)
9-17 Practical Considerations for Gears and Interfaces with Other Elements
383(3)
References
386(1)
Problems
387(5)
10 Helical Gears, Bevel Gears, and Wormgearing
392(41)
The Big Picture 393(2)
You Are the Designer 395(1)
10-1 Objectives of This Chapter
395(1)
10-2 Forces on Helical Gear Teeth
395(3)
10-3 Stresses in Helical Gear Teeth
398(4)
10-4 Pitting Resistance for Helical Gear Teeth
402(1)
10-5 Design of Helical Gears
403(2)
10-6 Forces on Straight Bevel Gears
405(3)
10-7 Bearing Forces on Shafts Carrying Bevel Gears
408(4)
10-8 Bending Moments on Shafts Carrying Bevel Gears
412(1)
10-9 Stresses in Straight Bevel Gear Teeth
412(3)
10-10 Design of Bevel Gears for Pitting Resistance
415(2)
10-11 Forces, Friction, and Efficiency in Wormgear Sets
417(6)
10-12 Stress in Wormgear Teeth
423(1)
10-13 Surfaces Durability of Wormgear Drives
424(5)
References
429(1)
Problems
430(3)
11 Keys, Couplings, and Seals
433(38)
The Big Picture 434(1)
You Are the Designer 435(1)
11-1 Objectives of This Chapter
435(1)
11-2 Keys
436(4)
11-3 Materials for Keys
440(1)
11-4 Stress Analysis to Determine Key Length
440(5)
11-5 Splines
445(4)
11-6 Other Methods of Fastening Elements to Shafts
449(5)
11-7 Couplings
454(1)
11-8 Universal Joints
455(4)
11-9 Retaining Rings and Other Means of Axial Location
459(3)
11-10 Types of Seals
462(3)
11-11 Seal Materials
465(4)
References
469(1)
Problems
469(2)
12 Shaft Design
471(44)
The Big Picture 472(1)
You Are the Designer 473(1)
12-1 Objectives of This Chapter
473(1)
12-2 Shaft Design Procedure
473(3)
12-3 Forces Exerted on Shafts by Machine Elements
476(4)
12-4 Stress Concentrations in Shafts
480(3)
12-5 Design Stresses for Shafts
483(4)
12-6 Shafts in Bending and Torision Only
487(2)
12-7 Shaft Design Example
489(4)
12-8 Recommended Basic Sizes for Shafts
493(1)
12-9 Additional Design Examples
494(8)
12-10 Spreadsheet Aid for Shaft Design
502(1)
References
503(1)
Problems
504(11)
13 Tolerances and Fits
515(20)
The Big Picture 516(1)
You Are the Designer 517(1)
13-1 Objectives of This Chapter
517(1)
13-2 Factors Affecting Tolerances and Fits
518(1)
13-3 Tolerances, Production Processes, and Cost
518(2)
13-4 Preferred Basic Sizes
520(2)
13-5 Clearance Fits
522(4)
13-6 Interference Fits
526(2)
13-7 Transition Fits
528(1)
13-8 Robust Product Design
528(1)
13-9 Stresses for Forces Fits
529(4)
References
533(1)
Problems
533(2)
14 Rolling Contact Bearings
535(32)
The Big Picture 536(1)
You Are the Designer 537(1)
14-1 Objectives of This Chapter
538(1)
14-2 Types of Rolling Contact Bearings
538(4)
14-3 Thrust Bearings
542(1)
14-4 Mounted Bearings
542(2)
14-5 Bearing Materials
544(1)
14-6 Load/Life Relationship
544(1)
14-7 Bearing Manufacturers' Data
545(4)
14-8 Design Life
549(2)
14-9 Bearing Selection: Radial Loads Only
551(1)
14-10 Bearing Selection: Radial and Thrust Loads Combined
552(2)
14-11 Mounting of Bearings
554(2)
14-12 Tapered Roller Bearings
556(2)
14-13 Practical Considerations in the Application of Bearings
558(4)
14-14 Importance of Oil Film Thickness in Bearings
562(1)
14-15 Life Prediction under Varying Loads
563(1)
References
564(1)
Problems
565(2)
15 Completion of the Design of a Power Transmission
567(32)
The Big Picture 568(1)
15-1 Objectives of This Chapter
568(1)
15-2 Description of the Power Transmission to Be Designed
568(2)
15-3 Design Alternatives and Selection of the Design Approach
570(2)
15-4 Design Alternatives for the Gear-Type Reducer
572(1)
15-5 General Layout and Design Details of the Reducer
572(20)
15-6 Final Design Details for the Shafts
592(3)
15-7 Assembly Drawing
595(2)
References
597(2)
PART III Design Details and Other Machine Elements 599
16 Plain Surface Bearings
600(27)
The Big Picture 601(2)
You Are the Designer 603(1)
16-1 Objectives of This Chapter
603(1)
16-2 The Bearing Design Task
603(2)
16-3 Bearing Parameter, un/p
605(1)
16-4 Bearing Materials
606(2)
16-5 Design of Boundary-lubricated Bearings
608(6)
16-6 Full-Film Hydrodynamic Bearings
614(1)
16-7 Design of Full-Film Hydrodynamically Lubricated Bearings
615(6)
16-8 Practical Considerations for Plain Surface Bearings
621(1)
16-9 Hydrostatic Bearings
622(3)
References
625(1)
Problems
626(1)
17 Power Screws and Ball Screws
627(14)
The Big Picture 628(1)
You Are the Designer 629(1)
17-1 Objectives of This Chapter
630(1)
17-2 Power Screws
630(6)
17-3 Ball Screws
636(3)
References
639(1)
Problems
639(2)
18 Fasteners
641(14)
The Big Picture 642(2)
You Are the Designer 644(1)
18-1 Objectives of This Chapter
644(1)
18-2 Other Types of Fasteners and Accessories
644(2)
18-3 Bolt Materials and Strength
646(2)
18-4 Thread Designations
648(2)
18-5 Performance of Bolted Joints
650(3)
18-6 Other Means of Fastening
653(1)
References
654(1)
Problems
654(1)
19 Springs
655(42)
The Big Picture 656(1)
You Are the Designer 657(1)
19-1 Objectives of This Chapter
657(1)
19-2 Kinds of Springs
658(3)
19-3 Helical Compression Springs
661(9)
19-4 Stresses and Deflection for Helical Compression Springs
670(2)
19-5 Analysis of Spring Characteristics
672(2)
19-6 Design of Helical Compression Springs
674(9)
19-7 Extension Springs
683(4)
19-8 Helical Torsion Springs
687(7)
References
694(1)
Problems
695(2)
20 Machine Frames, Bolted Connections, and Welded Joints
697(22)
The Big Picture 698(1)
You Are the Designer 699(1)
20-1 Objectives of This Chapter
699(1)
20-2 Machine Frames and Structures
699(5)
20-3 Eccentrically Loaded Bolted Joints
704(3)
20-4 Welded Joints
707(8)
References
715(1)
Problems
716(3)
21 Electric Motors
719(35)
The Big Picture 720(1)
You Are the Designer 721(1)
21-1 Objectives of This Chapter
721(1)
21-2 Motor Selection Factors
722(1)
21-3 AC Power and General Information about AC Motors
723(1)
21-4 Principles of Operation of AC Induction Motors
724(2)
21-5 AC Motor Performance
726(1)
21-6 Three-Phase, Squirrel-Cage Induction Motors
727(3)
21-7 Single-Phase Motors
730(3)
21-8 AC Motor Frame Types and Enclosures
733(3)
21-9 Controls for AC Motors
736(8)
21-10 DC Power
744(1)
21-11 DC Motors
745(3)
21-12 DC Motor Control
748(2)
21-13 Other Types of Motors
750(1)
References
751(1)
Problems
751(3)
22 Motion Control: Clutches and Brakes
754(35)
The Big Picture 755(2)
You Are the Designer 757(1)
22-1 Objectives of This Chapter
757(1)
22-2 Descriptions of Clutches and Brakes
757(2)
22-3 Types of Friction Clutches and Brakes
759(4)
22-4 Performance Parameters
763(2)
22-5 Time Required to Accelerate a Load
765(2)
22-6 Inertia of a System Referred to the Clutch Shaft Speed
767(2)
22-7 Effective Inertia for Bodies Moving Linearly
769(1)
22-8 Energy Absorption: Heat-Dissipation Requirements
770(1)
22-9 Response Time
771(2)
22-10 Friction Materials and Coefficient of Friction
773(1)
22-11 Plate-Type Clutch or Brake
774(2)
22-12 Caliper Disc Brakes
776(1)
22-13 Cone Clutch or Brake
776(2)
22-14 Drum Brakes
778(4)
22-15 Band Brakes
782(2)
22-16 Other Types of Clutches and Brakes
784(2)
References
786(1)
Problems
786(3)
23 Design Projects
789
23-1 Objectives of This Chapter
790(1)
23-2 Design Projects
790
Appendices A-1(45)
Appendix 1 Properties of Areas A-1(2)
Appendix 2 Preferred Basic Sizes and Screw Threads A-3(3)
Appendix 3 Design Properties of Carbon and Alloy Steels A-6(2)
Appendix 4 Properties of Heat-treated Steels A-8(6)
Appendix 5 Properties of Stainless Steels A-14(1)
Appendix 6 Properties of Stainless Steel A-15(1)
Appendix 7 Properties of Structural Steels A-16(1)
Appendix 8 Design Properties of Cast Iron A-17(1)
Appendix 9 Typical Properties of Aluminum A-18(1)
Appendix 10 Typical Properties of Zinc Casting Alloys A-19(1)
Appendix 11 Properties of Titanium Alloys A-20(1)
Appendix 12 Properties of Bronzes A-21(1)
Appendix 13 Typical Properties of Selected Plastics A-22(1)
Appendix 14 Beam-Deflection Formulas A-23(9)
Appendix 15 Stress Concentration Factors A-32(4)
Appendix 16 Steel Structural Shapes A-36(6)
Appendix 17 Aluminum Structural Shapes A-42(2)
Appendix 18 Conversion Factors A-44(1)
Appendix 19 Hardness Conversion Table A-45(1)
Answers to Selected Problems A-46
Index I-1


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