THEORY OF MACHINES
*Theory of machines deals with the study of relative motion between the various parts of a machine and forces which act on them.
1. Kinematics - It deals with the relative motion of various parts of machine
2. Dynamics - It deals with the forces acting on various parts of machine
3. Statics - It deals with the forces and their effects when machine is in rest.
4. Kinetics - It deals with the inertia force which arises from the combined effect of mass and motion of the machine parts.
KINEMATIC LINKS
1. Rigid Link
The links which do not undergo any significant deformation while transmitting required motion and forces .
Ex: Crank,Piston Connecting Rod.
2. Flexible Link
Links which are partly deformed while transmitting motion and does not affect transmission of motion.
Ex: Chain,Spring belt.
3. Fluid Link
Links which transmit the motion by fluid pressure as compression are known as fluid links.
Ex: Hydraulic press and brakes.
MACHINE
*It is an assemblage of links (or) mechanisms which are used to transmit both the required motion and forces.
*It can transfer both force and motion.
*It converts the available energy into mechanical work. Ex: IC engine, Lathe machine.
STRUCTURE
*It is an assemblage of a number of resistant bodies having no relative motion between them and used for carrying loads.
*It can transmit only force. Ex: Roof truss used in Buildings.