Lateral Instability of I‐Beams with Imperfections

摘要: When perfectly straight beams are subjected to loads without eccentricity, the critical load is lateral‐torsional buckling obtained as an eigenvalue for bifurcation problem of beams. Since a real beam used in practice has not only geometrical imperfections due initial out‐of‐plane and twisting deformations eccentricity loads, but also material imperfections, such premature yielding because nonlinearity or residual stress, behavior somewhat different from that perfect beam. The maximum value on load‐deflection curve called ultimate load‐carrying capacity or, In this paper distinguished. Then relationship between effect types stress distribution, well loading conditions geom...