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applied strength of materials sixth edition si units version pdf

Objectives of the Book

Applied Strength of Materials, Sixth Edition: SI Units Version provides comprehensive
coverage of the important topics in strength of materials with an emphasis on applications,
problem solving, and design of structural members, mechanical devices, and systems. The
book is written for students studying Strength of Materials, Mechanics of Materials, or
Solid Mechanics in an engineering technology program at the baccalaureate or associate
degree level or in an applied engineering program. This book provides good readability for the student, appropriate coverage of the
principles of strength of materials for the faculty member teaching the subject, and a
problem-solving and design approach that is useful for the practicing designer or engineer.
Educational programs in the mechanical, civil, construction, architectural, industrial, and
manufacturing fields will find the book suitable for an introductory course in strength of

New “SI Units” Version

This newly available “SI units” version is an adaptation of Applied Strength of Materials,
now in its sixth edition. That original text uses both SI/metric and U.S. customary units,
and given its international popularity, there was great demand for a version that uses exclusively SI/metric units. This version is the first available with all calculations, examples, and
problems using only the SI/metric system of units and components.

It is intended for use in areas that do not interact with the U.S. market and therefore do not need to work with the U.S. customary system of units. This version is not interchangeable with the original; readers in the United States, surrounding areas, and others who directly interact with U.S.
markets should use the original version of this text that includes both unit systems, also
available from CRC Press.


This text emphasizes the applications of the principles of strength of materials to mechanical, manufacturing, structural, and construction problems while providing a firm understanding of those principles. At the same time, the limitations to the use of analysis techniques are emphasized to ensure that they are applied properly. Both analysis and design approaches are used in the book.


Students should be able to apply the principles of statics prior to using this book. For
review, there is a summary in Chapter 1 of the main techniques from a course in statics,
emphasizing the analysis of forces and moments. Several example problems are included
that use the principles of statics to solve practice problems in this book.

While not essential, it is recommended that students have an introductory knowledge
in calculus. As called for by accrediting agencies, calculus is used to develop the key principles and formulas used in this book. The application of the formulas and most problemsolving and design techniques can be accomplished without the use of calculus.

Features of the Book

The Big Picture. Students should see the relevance of the material they study. They
should be able to visualize where devices and systems that they are familiar with depend
on the principles of strength of materials. For this reason, each chapter starts with a section
called “The Big Picture.” Here, the basic concepts developed in the chapter are identified,
and students are asked to think about examples from their own experience where these
concepts are used. A new, full-color photograph is included in a special color image section for “The Big Picture” section for each chapter with an introduction that describes the relationship between the picture and the principles to be learned in that chapter.

Sometimes students are asked to explore new things on their own to discover how a product works
or how it can fail. They are coached to make observations about the behavior of common
mechanical devices, vehicles, industrial machinery, consumer products, and structures.
Educational philosophy indicates that students learn better and retain more when such
methods are employed.

Activity-Based Learning.

Activity-based learning methods are integrated into the popular “The Big Picture” section, a successful feature in all previous editions. The activity can be used independently by the students, by the instructor as a classroom demonstration, or a combination of these approaches. These activities allow the instructor and the students to extend “The Big Picture” dialog into hands-on experiences that give an enhanced appreciation and greater physical feel for the phenomena
involved. Activities can help students from different disciplines work together and learn
from each other. The activities are generally simple and can be completed in a short
amount of time with inexpensive materials and quick setups.

The emphasis is on qualitative appreciation of the physical phenomena with a modest amount of measurement involved. Educational research has shown that students learn better when they are personally involved in activities as opposed to listening to lectures. Furthermore, retention
of abilities learned is improved along with greater ability to transfer learning to new and
different applications.

Extensive Appendix.

To complement the use of design approaches, the appendix
provides additional information on material properties, geometry of common areas and
commercially available structural shapes, stress concentration factors, formulas for beam
deflection, conversion factors, and many others. This allows for a wider variety of problems in the book and for creating tests and projects. It adds to the realism of the book and gives the students practice in looking for the necessary information to solve a problem or to complete a design. All calculations, examples, and problems in this “SI units” version use SI/metric data. The appendix does, however, include data from the U.S. customary system simply as reference.

Twelve entirely new tables have been added to the appendix on property data for wood
boards, angles, channels, I shapes, hollow square and rectangular tubing, and steel mechanical
tubing to supplement, and in some cases replace, those included in the previous edition. This
offers designers of mechanical devices or manufacturing applications a wider variety of sizes
of structural shapes, particularly for pure SI sizes and for the smaller part of the size spectrum.