Large deflection analysis of shell structures

Features:

NIDA provides verstile nonlinear solution methods

Seismic evaluation (response spectrum, pushover, time-history)

Elastic buckling and vibration analysis

Load and construction sequences analysis

Plastic hinge method

Semi-rigid connection

Elimination of effective length assumption

Consideration of P-Δ, P-δ effects and initial imperfections;

Second-order (Direct) analysis to CoPHK / BS 5950 /Eurocode3

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Large deflection analysis of shell structures

The shell elements in NIDA can be used to trace the large deflection behavior of shell structures, especially the snap-through and snap-back buckling.

Local buckling of top flange of a box section under moment

Hinged Cylindrical Shell

Layout and properties

Finite element model (1/4 of Original Shell)

Load-deflection Curve of Hinged Cylindrical Shell (T=12.7mm)

Load-deflection Curve of Hinged Cylindrical Shell (T=6.35mm)