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TWINSYS · STRUCTURE & STRENGTH

ShellFEA

Finite element analysis of welded steel tanks, silos and platforms from a shell mesh: static, large deflection, modal and seismic spectrum.

Product pages are in English.

ShellFEA in Twinsys — screenshot of the running app
Screenshot of the running app.

Highlights

A question it answers

Does this tank shell pass under hydrostatic pressure plus the site's seismic spectrum, and what forces are the seams carrying?

What you put in

A shell mesh file from Shell Mesher (or the sample tank); supports and loads on picked faces, edges or nodes or on the mesh's named selections — pressure, self-weight, hydrostatic head, wind to TS EN 1991-1-4 and forces on nodes; a seismic spectrum to TBDY 2018 or Eurocode 8 Type 1 with site class, spectral parameters and R, D and I; the analysis type and its settings, including the solver (direct or iterative) and, for a large-deflection run, load control or arc-length, the number of steps and whether pressure follows the deformed surface.

What you get

Displacement and stress contours with the through-thickness surface envelope (membrane plus and minus bending), deformed shape, natural frequencies with animated mode shapes, spectral response combined by CQC or SRSS with directional combination, seam utilisation ratios and the solver that ran; for a large-deflection run, the load–displacement curve against the linear answer, a step slider through the converged steps and the stability past a limit point; a line that says whether an independent count confirms the list of natural frequencies; and the meshed model sent on to Eigenvalue Buckling.

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