 ##  [Lateral-Torsional Buckling](/lateral-torsional-buckling) 

  ##  [Lateral-Torsional Buckling](https://engineering.quantumdictionary.io/lateral-torsional-buckling-0) 

  
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**Engineering &amp; Applied Technologies Dictionary**

 
Definition

An instability mode of a slender beam loaded in bending about its strong axis in which the compression flange displaces laterally and the cross-section rotates (twists), producing a coupled lateral deflection and torsional deformation that reduces the beam’s bending capacity relative to the unbuckled state.