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Subjects: 1- Introduction, Basic Definitions and concepts. Fast Review on Engineering 2- Velocity Analysis in Mechanisms 3- Acceleration Analysis in Mechanisms.

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Presentation on theme: "Subjects: 1- Introduction, Basic Definitions and concepts. Fast Review on Engineering 2- Velocity Analysis in Mechanisms 3- Acceleration Analysis in Mechanisms."— Presentation transcript:

1 Subjects: 1- Introduction, Basic Definitions and concepts. Fast Review on Engineering 2- Velocity Analysis in Mechanisms 3- Acceleration Analysis in Mechanisms 4- Friction, Belt or Ropes and chain drives 5- Clutches 6- Governor 7- Flywheels 8- Basic concepts of vibration and Introduction to oscillatory motion 9- Free vibration of an undamped single degree of freedom system. 10- Free vibration of a viscously damped single degree of freedom system. 11- Forced vibration of a single degree of freedom system. 12- Two - degree of freedom system.

2 1- Theory of Machines by R.S.KHURMI 2- Mechanical Vibrations by Sinirseu S. Rao Fifth Edition 2011 3- Theory of Machines by S.S.RATTEN 4- Mechanical Vibrations theory and applications, S Graham Kelly 5- SCHAUM's Outline of Mechanical Vibrations

3 Introduction may be defined as that branch of Engineering, which deals with the study of relative motion between the different parts of a machine, and forces which act on them. Is very essential for an engineer in designing the various parts of machine. Theory of Machines

4 The Theory of Machines may be sub-divided into the following four branches: 1- Kinematics. 2- Dynamics 3- Kinetics 4- Statics

5 1. Kinematics: is that branch of theory of machines which is responsible to study the motion of bodies without reference to the forces which are cause this motion, i.e it’s relate the motion variables (displacement, velocity, acceleration) with the time. 2. Dynamics. It is that branch of Theory of Machines which deals with the forces and their effects, while acting upon the machine parts in motion. 3. Kinetics. It is that branch of Theory of Machines which deals with the inertia forces which arise from the combined effect of the mass and motion of the machine parts. 4. Statics. It is that branch of Theory of Machines which deals with the forces and their effects while the machine parts are at rest. The mass of the parts is assumed to be negligible.

6 is a combination of rigid bodies which are formed and connected together by some means, so that they are moved to perform some functions, such as the crank- connecting rod mechanism of the I.C. engines, steering mechanisms of automobiles……. etc. The analysis of mechanisms is a part of machine design which is concerned with the kinematics and kinetics of mechanisms (or the dynamics of mechanisms).

7 is that body whose changes in shape are negligible compared with its overall dimensions or with the changes in position of the body as a whole, such as rigid link, rigid disc…..etc.

8 are rigid bodies each having hinged holes or slot to be connected together by some means to constitute a mechanism which able to transmit motion or forces to some another locations.

9 the motion of body in relative to another body which is at rest or to a fixed point located on this body. the motion of body in relative to another moved body are those quantities which have magnitude only e.g. mass, time, volume, density etc.

10 are those quantities which have magnitude as well as direction e.g. velocity, acceleration, force etc.

11 Kinematics of Mechanisms:

12 1-2: Sliding Parts: The sliding connection may be used to connect two links rotate about fixed points by means of slot, pin and hinge.

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