Applied Strength of Materials (6^th Ed.)

Designed for a first course in strength of materials, Applied Strength of Materials has long been the bestsellerfor Engineering Technology programs because of its comprehensive coverage, and its emphasis on sound fundamentals, applications, and problem-solving techniques. The combination of clear and consistent problem-solving techniques, numerous end-of-chapter problems, and the integration of both analysis and design approaches to strength of materials principles prepares students for subsequent courses and professional practice. The fully updated Sixth Edition. Built around an educational philosophy that stresses active learning, consistent reinforcement of key concepts, and a strong visual component, Applied Strength of Materials, Sixth Edition continues to offer the readers the most thorough and understandable approach to mechanics of materials.

Preface

Basic Concepts in Strength of Materials

The Big Picture

Objective of This Book – To Ensure Safety

Objectives of This Chapter

Problem-solving Procedure

Basic Unit Systems

Relationship Among Mass, Force, and Weight

The Concept of Stress

Direct Normal Stress

Stress Elements for Direct Normal Stresses

The Concept of Strain

Direct Shear Stress

Stress Element for Shear Stresses

Preferred Sizes and Standard Shapes

Experimental and Computational Stress

The Big Picture

Objectives of This Chapter

Design Properties of Materials

Steel

Cast Iron

Aluminum

Copper, Brass, and Bronze

Zinc, Magnesium, Titanium, and Nickel-Based Alloys

Nonmetals in Engineering Design

Wood

Concrete

Plastics

Composites

Materials Selection

The Big Picture and Activity

Objectives of this Chapter

Design of Members under Direct Tension or Compression

Design Normal Stresses

Design Factor

Design Approaches and Guidelines for Design Factors

Methods of Computing Design Stress

Elastic Deformation in Tension and Compression Members

Deformation Due to Temperature Changes

Thermal Stress

Members Made of More Than One Material

Stress Concentration Factors for Direct Axial Stresses

Bearing Stress

Design Bearing Stress

The Big Picture

Objectives of This Chapter

Design for Direct Shear Stress

Torque, Power, and Rotational Speed

Torsional Shear Stress in Members with Circular Cross Sections

Development of the Torsional Shear Stress Formula

Polar Moment of Inertia for Solid Circular Bars

Torsional Shear Stress and Polar Moment of Inertia for Hollow Circular Bars

Design of Circular Members under Torsion

Comparison of Solid and Hollow Circular Members

Stress Concentrations in Torsionally Loaded Members

Twisting – Elastic Torsional Deformation

Torsion in Noncircular Sections

The Big Picture

Objectives of this Chapter

Beam Loading, Supports, and Types of Beams

Reactions at Supports

Shearing Forces and Bending Moments for Concentrated Loads

Guidelines for Drawing Beam Diagrams for Concentrated Loads

Shearing Forces and Bending Moments for Distributed Loads

General Shapes Found in Bending Moment Diagrams

Shearing Forces and Bending Moments for Cantilever Beams

Beams with Linearly Varying Distributed Loads

Free-Body Diagrams of Parts of Structures

Mathematical Analysis of Beam Diagrams

Continuous Beams – Theorem of Three Moments

The Big Picture

Objectives of This Chapter

The Concept of Centroid – Simple Shapes

Centroid of Complex Shapes

The Concept of Moment of Inertia

Moment of Inertia for Composite Shapes Whose Parts have the Same Centroidal Axis

Moment of Inertia for Composite Shapes – General Case – Use of the Parallel Axis Theorem

Mathematical Definition of Moment of Inertia

Composite Sections Made from Commercially Available Shapes

Moment of Inertia for Shapes with all Rectangular Parts

Radius of Gyration

Section Modulus

The Big Picture

Objectives of This Chapter

The Flexure Formula

Conditions on the Use of the Flexure Formula

Stress Distribution on a Cross Section of a Beam

Derivation of the Flexure Formula

Applications – Beam Analysis

Applications – Beam Design and Design Stresses

Section Modulus and Design Procedures

Stress Concentrations

Flexural Center or Shear Center

Preferred Shapes for Beam Cross Sections

Design of Beams to be Made from Composite Materials

The Big Picture

Objectives of this Chapter

Importance of Shearing Stresses in Beams

The General Shear Formula

Distribution of Shearing Stress in Beams

Development of the General Shear Formula

Special Shear Formulas

Design for Shear

Shear Flow

The Big Picture

Objectives of this Chapter

The Need for Considering Beam Deflections

General Principles and Definitions of Terms

Beam Deflections Using the Formula Method

Comparison of the Manner of Support for Beams

Superposition Using Deflection Formulas

Successive Integration Method

Moment-Area Method

The Big Picture

Objectives of this Chapter

The Stress Element

Stress Distribution Created by Basic Stresses

Creating the Initial Stress Element

Combined Normal Stresses

Combined Normal and Shear Stresses

Equations for Stresses in Any Direction

Maximum Stresses

Mohr’s Circle for Stress

Stress Condition on Selected Planes

Special Case in which Both Principal Stresses have the Same Sign

Use of Strain-Gage Rosettes to Determine Principal Stress Columns

The Big Picture

Objectives of this Chapter

Slenderness Ratio

Transition Slenderness Ratio

The Euler Formula for Long Columns

The J. B. Johnson Formula for Short Columns

Summary – Buckling Formulas

Design Factors and Allowable Load

Summary – Method of Analyzing Columns

Column Analysis Spreadsheet

Efficient Shapes for Columns

Specifications of the AISC

Specifications of the Aluminum Association

Non-Centrally Loaded Columns

The Big Picture

Objectives of this Chapter

Distinction Between Thin-Walled and Thick-Walled Pressure Vessels

Thin-Walled Spheres

Thin-Walled Cylinders

Thick-Walled Cylinders and Spheres

Analysis and Design Procedures for Pressure Vessels

Spreadsheet Aid for Analyzing Thick-Walled Spheres and Cylinders

Shearing Stress in Cylinders and Spheres

Other Design Considerations for Pressure Vessels

Composite Pressure Vessels

The Big Picture

Objectives of this Chapter

Modes of Failure for Bolted Joints

Design of Bolted Connections

Riveted Joints

Eccentrically Loaded Riveted and Bolted Joints

Welded Joints with Concentric Loads

Robert L. Mott is professor emeritus of engineering technology at the University of Dayton. He is a member of ASEE, SME, and ASME. He is a Fellow of ASEE and a recipient of the ASEE James H. McGraw Award, Frederick J. Berger Award, and the Archie Higdon Distinguished Educator Award (From Applied Mechanics Division). He is a recipient of the SME Education Award. He holds the Bachelor of Mechanical Engineering degree from General Motors Institute (now Kettering University) and the Master of Science in Mechanical Engineering from Purdue University. His industry experience includes General Motors Corporation, consulting for several companies, and serving as an expert witness on numerous legal cases. He is the author of three textbooks: Applied Fluid Mechanics 7^th ed. (co-authored with Joseph A. Untener) and Machine Elements in Mechanical Design 6^th ed., published by Pearson/Prentice-Hall; Applied Strength of Materials 6^th ed. (co-authored with Joseph A. Untener) with CRC Press.

Joseph A. Untener, P.E. is a professor of engineering technology at the University of Dayton. He is a member of ASEE, SME, and ASME. He holds the Bachelor of Mechanical Engineering degree from General Motors Institute (now Kettering University) and the Master of Science in Industrial Administration from Purdue University. He has worked on the design and implementation of manufacturing equipment at General Motors, and served as an engineering consultant for many other companies. He teaches courses in Mechanical Engineering Technology at UD. He has co-authored two textbooks with Robert L. Mott: Applied Fluid Mechanics 7^th ed. published by Pearson/Prentice-Hall, and Applied Strength of Materials 6^th ed. with CRC Press.