What is flywheel and its function

What is Flywheel?

        A flywheel is a heavy disk type wheel, rotating about an axis which is perpendicular to its face.

• It acts as a reservoir of energy, which stores the energy in the form of kinetic energy. 
• The extra energy stored during the idle stroke of the driven machinery and released during the working stroke. Thus flywheel controls the fluctuations of speed during each cycle of the driven machinery. 

What are the functions of a flywheel in a machine?

The primary functions of a flywheel are:-

• To absorb energy when the demand for energy is less than the supply
• To give out energy when the demand for energy is more than the supply.
• It is used to store energy when available and supply it when required.
• To reduces speed fluctuations.
• To reduce the power capacity of electric motor or engine

What is the Difference between presure and stress?

What types of stresses are set up on the flywheel rims?

• Tensile stress due to the centrifugal force
• Tensile bending stress due to the restraint of the arms
• Shrinkage stresses due to the unequal rate of cooling of casting.
• Due to centrifugal forces acting on the rim, the flywheel arms will be subjected to Tensile stress.

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