This article contains FAQ related to Design Request elongation settings.

FAQ

How do pressure and temperature elongation settings affect the results in CSiPlant?

Answer: The pressure and temperature elongation settings found in the Design Request definition form are used to control how pressure and thermal loads are used in the design (the base analysis results are not affected by the elongation settings, only design result sets are impacted). Figure 1 shows the Design Request form where elongation settings can be specified.

Figure 1: Design Checks tab has the elongation settings, allowing separate treatment for each Design Stress Category (except pressure which is not editable and defaults to include pressure elongation/exclude temperature elongation)

Elongation Settings

For each design check stress category (except Pressure), the elongation settings are used to provide control for how pressure and temperature loads are included (or not) in the analysis design results. Note that the elongation settings DO NOT apply to the following situations:

• Base analysis result sets.
• Pressure/temperature load patterns directly added to the load case (i.e. in addition to Reference Pressure or Reference Temperature) are not  Figure 1 shows the Design Request form where elongation settings can be specified.

Figure 1: Design Checks tab has the elongation settings, allowing separate treatment for each Design Stress Category (except pressure which is not editable and defaults to include pressure elongation/exclude temperature elongation)

  Pressure and temperature loads can be included in the analysis to generate internal forces and moments.  The elongation settings are used to provide control for each design stress category on how those loads are included in the analysis.

For the elongation settings to be applied as intended in the design check, the pressure and temperature patterns of interest must be specified in the Reference Pressure and Temperature fields.  Adding pressure or temperature loads directly to the load case bypasses the elongation setting and the corresponding loads will be included in analysis.  Figure 1 shows the non-linear static load case form and the different ways pressure and temperature patterns can be added.

Figure 1: Non-linear static load case form indicating Reference condition fields.

Figure 2: Non-linear static load case form indicating Reference condition fields.