Concept of torsion, Numerical Problem, Torsion Equation, Power Transmission by shaft

1. TORSION
Concept of Torsion
Difference between TORQUE and TORSION
Use of TORSION Equation for circular shaft
Power transmitted by shaft
Related Numerical Problem
By:-
Er. Bharat Bansal
Lect. Mechanical Engineering
Govt. Polytechnic College Bathinda

2. TORSION
• Twisting of a shaft
• Occurs when Torque or Twisting moment acts
on the shaft

3. ANGLE OF TWIST
• The angle through which the cross section of
the shaft is rotated by action of twisting
moment or torque.

4. Difference between TORQUE and
TORSION
TORQUE TORSION
Definition Rotation effect of Force Effect produced due to Torque
Measurement Possible Not Possible
SI unit Newton-meter No physical unit available,
Measured through angle of twist

5. PURE TORSION
• If shaft is subjected to two equal and opposite
twisting moments only, then it is said to be in
pure torsion or simple torsion.

6. ASSUMPTIONS IN THEORY OF PURE TORSION

7. TORSION EQUATION

8. POWER TRANSMITTED BY A SHAFT