Steel member: linear and nonlinear (geometric + material) analysis

About this calculation

Spatial member: flexural and lateral-torsional buckling, plasticity by the A–E diagram, imperfections and residual stresses, equilibrium path and ultimate load; comparison with EN 1993, SP 16.13330 and AISC 360.

Design basis

EN 1993-1-1, EN 1993-1-5 Annex C; SP 16.13330.2017; AISC 360-22 (App. 1.3, Ch. E, F, H); GOST, EN and AISC sections

Input data

• Design code: Design code; Analysis type
• Cross-section: Section range; Profile; Outer diameter D; Depth h; Width b; Wall thickness t; Outer corner radius (0 — 2t); Tube manufacture; Top flange width; Top flange thickness; Bottom flange width; Bottom flange thickness; Flange thickness tf; Web thickness tw
• Material: Steel grade; Thickness for fy; Product thickness; Build σ–ε diagram from the steel grade; Elastic modulus E; Point A: εA; Point A: σA; Point B: εB; Point B: σB; Point C: εC; Point C: σC; Point D: εD; Point D: σD; Point E: εE; Point E: σE; Partial factor γM1; Material factor γm; Service factor γc
• Member and supports: Length L; Bending in xz plane (about y, deflection w); Bending in xy plane (about z, deflection v); Torsion
• Lateral and torsional restraints: Top flange — lateral restraint; Top flange restraint spacing; Bottom flange — lateral restraint; Bottom flange restraint spacing; Web — lateral restraint (at the centroid level); Web restraint spacing; Torsional restraint (θ = 0); Torsional restraint spacing
• Loads (at λ = 1, scaled by λ): Axial force N (compression +); Eccentricity of N along z (up +); Eccentricity of N along y; My at left end; My at right end; Mz at left end; Mz at right end; Distributed load qz (down +); Distributed load qy; Point load Fz (down +); Point load Fy; Position of F from left end; Level of qz, Fz; Height above shear centre
• Deflections (serviceability): Deflection limit; Limit l /; Room height ≤ 6 m (bracketed values, Table D.1); Factor to characteristic loads γf
• Imperfections: Initial imperfection; Mode amplitude: L /; Bow in xz e0,z (down +); Bow in xy e0,y; Initial twist θ0; Residual stresses (rolled I): ECCS 0.3/0.5fy; AISC — 0.3Fy
• Analysis settings: Number of finite elements; Limiting fibre strain

Output

• Results with intermediate values
• Charts and diagrams
• PDF, Word, Excel report

FAQ