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AutoPIPE Ideas Portal

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Status Future consideration
Categories Analysis
Created by Guest
Created on Feb 15, 2024

Hydrotest Pressure Extension

Users can decide whether pressure extension should be considered in static analysis sets, but this is not an option for hydrotest cases. The user is required to consider it with no option to unselect "Pressure Extension" in the "Analysis Sets" interface. While pressure extension is a real effect, it can generally be regarded as negligible for most metallic piping systems with smaller D/t ratios. The magnitude of displacements associated with pressure extension on such systems tends to fall within the margin of error of simplified fully elastic stress analysis models, like those handled in AutoPIPE. When considering the default stiffness associated with pinned supports in the hydrotest case, loads due to pressure extension are greatly exaggerated in certain areas and are unable to be handled in the support design. AutoPIPE should allow the user to toggle pressure extension on or off, as needed, as with any other static analysis set.

  • Guest
    Feb 15, 2024

    Much appreciated, Phil. There are workarounds but the additional steps add up over multiple analyses.

  • Admin
    Phil Senior
    Feb 15, 2024

    I agree this would be a worthy addition, and we already have a feature in the backlog that I have connected this idea to along with the release of the lock at springs