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POWER TRANSMISSION. Objective:. To find the relationship between torque and the amount of power delivered to rotate a shaft. To design a shaft to carry a given power and/or torque. Power is rate of doing work. T = the applied torque (N-m) = angular velocity (rad/s)
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POWER TRANSMISSION Objective: • To find the relationship between torque and the amount of power delivered to rotate a shaft. • To design a shaft to carry a given power and/or torque.
Power is rate of doing work • T = the applied torque (N-m) • = angular velocity (rad/s) = angle of rotation but not angle of twist (rad) P = power P = 2fT f in Hz or (1 cycle/s)
Shaft Design Given: (T or P and all or alt) Find: d of the shaft. Example:
Example: Solution:
P P T T L L
--T ++T +T+ -T- B A + + T T