Introduction to Torsion: Relative Stresses and Strains

This lecture covers the introduction to torsion, focusing on relative stresses and strains in circular and non-circular bars. It explains the concept of couples, torque transmission through shafts, and the calculation of torsional angles. The presentation also delves into the shear modulus, torsional shear stress, and the equilibrium conditions in torsion. Practical examples and calculations are provided to illustrate the concepts discussed.