Elastic coupled local buckling strength of I‐shaped steel member in uniform bending

This research aims to theoretically derive a closed-form evaluation formula for the coupled local buckling strength of I-shaped steel members under uniform bending. Power trigonometric functions are used devise particular displacement function. Because function is fast-converging compared Fourier function, it possible deflection be described using only two terms Subsequently, equation proposed based on An eigenvalue analysis finite element method then conducted verify reliability and effectiveness equation.