Nonuniform Torsion in Structural Mechanics

This lecture covers the analysis of nonuniform torsion in structural members, focusing on thin-walled tubes and their torsional behavior. The instructor explains the strain energy, shear flow, and torsional constants in various cross-sectional shapes. Emphasis is placed on deriving formulas and understanding the geometric interpretations of torsion. The lecture also discusses the angle of twist in thin-walled tubes and the determination of work done by applied torque. Additionally, the torsional constants of characteristic shapes and girders in bridges are explored, providing insights into practical applications in civil engineering.