Determines the critical moment Mcr of the elastic spill, the Mcr being the parameter needed in calculations for checking the resistance of the bars to the spill. There are lateral restraints against the spill which can be rigid or resilient and relate to torsional rotation or other effects.
LTBeam is a software which deals with the elastic "Lateral Torsional Buckling of Beams" under bending action about their major axis.
The lateral torsional buckling phenomenon (LTB) appears when the bending action reaches a critical level. It generates suddenly and simultaneously a lateral bending deformation and a longitudinal torsional deformation along the unrestrained length of beam.
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