calculate diameter of shaft required to transmit 90kW at 1200rpm The maximum torque is likely to exeed the mean by 33.37% for a maximum permissible shear stress of 55 N/mm. Calculate angle of twist for same data if the length of the shaft is 5 m. take G=80 KN/mm
Answers
How to calculate the shaft diameter from the torque?
When a shaft is transmitting a power from driver equipment to the driven equipment, It is necessary to calculate the shaft diameter from the torque based on the maximum torque that can be transferred through the shaft or the maximum amount of twist in the shaft. Otherwise, the shaft may not satisfy the functionality of the equipment.
calculate the shaft diameter from the torque
Inputs that we need to calculate shaft diameter
As we know Torsional equation (Read more about the torsional equation here)calculate the shaft diameter from the torque
calculate the shaft diameter from the torque
Where
τ = Torsional stress induced at the outer surface of the shaft (Maximum Shear stress).
r = Radius of the shaft.
T = Twisting Moment or Torque.
J = Polar moment of inertia.
C = Modulus of rigidity for the shaft material.
l = Length of the shaft.
θ = Angle of twist in radians on a length.
From Torsion Equation we can consider