Torsional torsional buckling
a) view (without deformation drawn)
b) cross-section in the vicinity of the Auflagers
twisted c) due Biegedrillknickens cross-section in the middle of carrier
The term lateral torsional buckling , otherwise out of date also known as tilting in Switzerland , is the failure of a beam due to a bending moment , whereby the parts of the structure under compressive stress fail due to buckling . The carrier is bent and simultaneously twisted ("twisted"). Because of the high risk potential of this form of component failure , lateral torsional buckling is examined in detail in stability theory; tried and tested formulas and tables are available for the practical dimensioning of components .
In general, the risk for a girder to fail due to torsional torsional buckling becomes less, the closer the smallest and the largest geometrical moment of inertia of the associated cross-section approach. For this reason, the classic steel girders and slim laminated wood beams are particularly at risk. In addition, the play storage of the carrier and its load a role in torsion, closed hollow profiles , such as pipes are here particularly robust. In particular, the implementation of a fork bearing has proven to be an effective way of preventing overturning failure.