The Theory Of Machines Through Solved Problems

The Theory Of Machines Or Mechanism And Machine Theory Is A Basic Subject Taught In Engineering Schools To Mechanical Engineering Students. This Subject Lays The Foundation On Which Mechanical Engineering Design And Practice Rests With. It Is Also A Subject Taught When The Students Have Just Entered Engineering Discipline And Are Yet To Formulate Basics Of Mechanical Engineering. This Subject Needs A Lost Of Practice In Solving Engineering Problems And There Is Currently No Good Book Explaining The Subject Through Solved Problems. This Book Is Written To Fill Such A Void And Help The Students Preparing For Examinations. It Contains In All 336 Solved Problems, Several Illustrations And 138 Additional Problems For Practice. Basic Theory And Background Is Presented, Though It Is Not Like A Full Fledged Text Book In That Sense.This Book Contains 20 Chapters, The First One Giving A Historical Background On The Subject. The Second Chapter Deals With Planar Mechanisms Explaining Basic Concepts Of Machines. Kinematic Analysis Is Given In Chapter 3 With Graphical As Well As Analytical Tools. The Synthesis Of Mechanisms Is Given In Chapter 4. Additional Mechanisms And Coupler Curve Theory Is Presented In Chapter 5. Chapter 6 Discusses Various Kinds Of Cams, Their Analysis And Design. Spur Gears, Helical Gears, Worm Gears And Bevel Gears And Gear Trains Are Extensively Dealt With In Chapters 7 To 9. Hydrodynamic Thrust And Journal Bearings (Long And Short Bearings) Are Considered In Chapter 10.Static Forces, Inertia Forces And A Combined Force Analysis Of Machines Is Considered In Chapters 11 To 13. The Turning Moment And Flywheel Design Is Given In Chapter 14. Chapters 15 And 16 Deal With Balancing Of Rotating Parts, Reciprocating Parts And Four Bar Linkages. Force Analysis Of Gears And Cams Is Dealt With In Chapter 17. Chapter 18 Is Concerned With Mechanisms Used In Control, Viz., Governors And Gyroscopes. Chapters 19 And 20 Introduce Basic Concepts Of Machine Vibrations And Critical Speeds Of Machinery.A Special Feature Of This Book Is The Availability Of Three Computer Aided Learning Packages For Planar Mechanisms, Their Analysis And Animation, For Analysis Of Cams With Different Followers And Dynamics Of Reciprocating Machines, Balancing And Flywheel Analysis.

There has been tremendous growth in the area of kinematics and dynamics of machinery in the past 20 years, much of which exists in a large variety of technical papers, each requiring its own background for comprehension. These new developments can be integrated into the existing body of knowledge so as to provide a logical, modern, and comprehensive treatise. Such is the purpose of this book. This book offers outstanding coverage of mechanisms and machines, including important information on how to classify and analyze their motions, how to synthesize or design them, and how to determine their performance when operated as real machines. To develop a broad comprehension, all the methods of analysis and development common to the literature of the field are used. Part I of the book begins with an introduction which deals mostly with theory, nomenclature, notation, and methods of analysis. Serving as an introduction, Chapter 1 also tells what a mechanisms is, what it can do, how it can be classified, and what its limitations are. Chapters 2, 3, and 4 deal with analysis - all the various methods of analyzing the motions of mechanisms. Part II goes into the engineering problems involving the selection, specification, design, and sizing of mechanisms to accomplish specific motion objectives. Part III covers the consequences of the proposed mechanism design. In other words, having designed a machine by selecting, specifying, and sizing the various mechanisms which make up the machine, we tackle such questions as: What happens during the operation of the machine? What forces are produced? Are there any unexpected operating results? Will the proposed design be satisfactory in all respects?

While writing the book,we have continuously kept in mind the examination requirments of the students preparing for U.P.S.C.(Engg. Services)and A.M.I.E.(I)examinations.In order to make this volume more useful for them,complete solutions of their examination papers up to 1975 have also been included.Every care has been taken to make this treatise as self-explanatory as possible.The subject matter has been amply illustrated by incorporating a good number of solved,unsolved and well graded examples of almost every variety.

The subject theory of machines forms the basis for understanding the working principles of a machine. The theoretical principles involved in machines have immediate application to practical problems. Designed as a text for the undergraduate students of mechanical engineering, it covers all the basics of mechanism and machine theory in a simple and logical manner. The basic theory presented in the book has been evolved out of simple and readily understood principles. The text begins with the discussion on various types of mechanisms and their working principles. Further it discusses the working of Oldham’s coupling, automobiles steering gears, engine pressure indicators, and estimation of velocity and acceleration using relative velocity method, complex algebra method and instantaneous centre method. Types of friction and power transmission by belt drives are also explained in detail. Finally it concludes with cam and follower mechanism. KEY FEATURES : Balanced presentation of the graphical and algebraic approaches Numerous solved and unsolved problems in each chapter Wide coverage of topics as per the latest syllabi of various universities

The concept of moving machine members during a thermodynamic cycle and the variation of displacements, velocities and accelerations forms the subject of kinematics.The study of forces that make the motion is the subject of kinetics; combining these two subjects leads to dynamics of machinery. When we include the machinery aspects such as links, kinematic chains, and mechanisms to form a given machine we have the subject of Theory of Machines. Usually this subject is introduced as a two-semester course, where kinematics and kinetics are taught simultaneously with thermodynamics or heat engines before progressing to the design of machine members. This book provides the material for first semester of a Theory of Machines- course. Th is book brings in the machine live onto the screen and explains the theory of machines concepts through animations and introduces how the problems are solved in industry to present a complete history in the shortest possible time rather than using graphical (or analytical) methods. Thus the students are introduced to the concepts through visual means which brings industrial applications by the end of the two semester program closer, and equips them better for design courses. The International Federation for promotion of Mechanism and Machine Science (IFToMM) has developed standard nomenclature and notation on Mechanism and Machine Science and this book adopts these standards so that any communication between scientists and in the classrooms across the world can make use of the same terminology. This book adopts HyperWorks MotionSolve to perform the analysis and visualizations, though the book can be used independent of the requirement of any particular software. However, having this software helps in further studies and analysis. The avis can be seen by entering the ISBN of this book at the Springer Extras website at extras.springer.com

This book develops the basic content for an introductory course in Mechanism and Machine Theory. The text is clear and simple, supported by more than 350 figures. More than 60 solved exercises have been included to mark the translation of this book from Spanish into English. Topics treated include: dynamic analysis of machines; introduction to vibratory behavior; rotor and piston balanced; critical speed for shafts; gears and train gears; synthesis for planar mechanisms; and kinematic and dynamic analysis for robots. The chapters in relation to kinematics and dynamics for planar mechanisms can be studied with the help of WinMecc software, which allows the reader to study in an easy and intuitive way, but exhaustive at the same time. This computer program analyzes planar mechanisms of one-degree of freedom and whatever number of links. The program allows users to build a complex mechanism. They can modify any input data in real time changing values in a numeric way or using the computer mouse to manipulate links and vectors while mechanism is moving and showing the results. This powerful tool does not only show the results in a numeric way by means of tables and diagrams but also in a visual way with scalable vectors and curves.

A sound background for solving many of the practical design problems faced by mechanical engineers is provided in this classroom-tested text. Each chapter comprises a concise, but thorough, fundamental statement of the theory, principles, and practice of mechanism and machine theory, followed by illustrative worked examples. The text covers elementary mechanisms, coupler curves, gear trains, lubrication, static and inertia force analysis, balancing of reciprocating components, and much more. Many exercises are included.