Cyclic flexural behavior of thin-walled members that showed local, distortional or lateral torsional buckling.

Present a cyclic loading protocol for testing of thin-walled flexural members with targets based on elastic buckling properties.

Cyclic damage accumulated at the compressed web and flanges within the leading buckled half-wave for members experiencing local and distortional deformations.

Cyclic damage accumulation in members showing lateral torsional buckling occurred at C-section flange-stiffening lip.

Energy dissipation within the damaged half-wave(s) is higher for lower cross-sectional slenderness and increasing section modulus.