Novel Use of Hydrostatic Pressure :

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Given a ribbed, faceted, bulk, commodity container, calculate the stresses when filled and pressurized.

3D CAD model setup with finite element analysis elastic material model (linear stress). Use finite element bricks for the ribs, finite element shells for the container skin and the application of pressures, and gravity body loads (hydrostatic pressure, whcih was used in an inverted mode since the pressure on the side walls was greater at the top than the bottom, get it?).

Nodal strains, stresses, and displacements.

This problem illustrates the simultaneous use of gravity, static internal pressure, and quasi-, or hydrostatic-like pressure loading to apply a pressure gradient to the internal walls of the container. The first graphic is an isometric view of a "quarter symmetry" CAD solid model of the container. The 2nd graphic shows a stress output map.