Optimization of Cryogenic Pressure Vessel for Rapid Heat Transfer Analysis

Optimization of Cryogenic Pressure Vessel for Rapid Heat Transfer Analysis

Analysis

ASME BPVC

Objective

It is common for pressure vessels to have non-standard geometry that requires ASME Section VIII, Division 2 analysis. For example, maybe a cone requires an angle that exceeds standard code limits. General sizing of the member can be determined using design guidelines and the component can be shown to meet code allowables using FEA.

What if the majority of the components of the vessel are radically different from the standard components of and ASME Section VIII vessel? How is initial section sizing determined? For the high-pressure vessel featured in this case study, FEA was an integral tool in finding a starting point for component sizing and geometry as well as certifying the final design.

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ASME Section VIII Pressure Vessel - Optimization of Cryogenic Vessel for Rapid Heat Transfer.pdf (997.2 KB)
Figure 1: Original cryogenic ASME pressure vessel CAD geometry.
Figure 2: Final vessel design as a collection of surfaces ready for FEA plate meshing
Figure 3: An exaggerated deformation of the vessel under high pressure loading
Figure 4: Plate element mesh with ASME Section VIII, Division 2 stress intensity contour.