European Recommendations on the Stabilization of Steel ... - Xs4all

Introductionm k contact moment [FL/L]m ϑA stabilization moment [FL/L]M bending moment [FL]M cr elastic critical moment for lateral torsional buckling [FL]M E external moment [FL]M I internal moment [FL]M pl plastic bending resistance [FL]M S restraining moment [FL]n number of sandwich panels [-]n f number of fasteners [L -1 ]n f number of fasteners per panel and support [-]n k number of pairs of fasteners per panel and support [-]N normal force [F]N cr elastic critical buckling load [F]qdownward load to be transferred from the panel to the [F/L]beamq i (x) restraining load [F/L]S shear stiffness [F]S i shear stiffness available for stabilizing one beam [F]σ w wrinkling stress [F/L 2 ]t 1 design sheet thickness of faces t F1, t F2 (aluminium) [L]t = t nom - 0,5∙t tol for normal tolerancest cor1t = t nomfor special tolerancesdesign core sheet thickness of faces t F1, t F2 (steel) [L]t cor = t nom - t zinc - 0,5∙t tol for normal toleranceaccording to EN 10143t cor = t nom - t zinc for special toleranceaccording to EN 10143t cor,sup core sheet thickness of the supporting structure [L]t nom nominal thickness of the sheet [L]t tol normal or special tolerance [L]t zinctotal thickness of the zinc layers (or similar protective [L]coating); t zink = 0,04 mm for Z 275V shear force of a fastening [F]V S shear force in the fastening resulting from stabilization [F]ΔV S shear force of fastening resulting from restraining [F]translationsMV S shear force of fastening resulting from restrainingmoments[F]1 The definitions of the design sheet thickness and of the design core sheet thicknesscorrespond to the definitions given in FprEN 14509 [25]. The corresponding notation in EN14509 is t d or t.15