ASME B31J-2015 aims to provides a standardized method to develop the stress intensification factors (i-factors), flexibility factors (k-factors), and sustained stress factors used in B31 piping analysis.
The draft B31J provides detailed calculation for flexibility factors, branch and header flexibilities, SIF values and some commentary on experimental results.
The incorporation of such flexibility factors aims to provide a more realistic behaviour of the model, specifically for models with tee components.
As ASME B31J is still in draft phase, we have done our independent verification of our analysis results.
This feature is issued as early preview of the technology in AutoPIPE v11.0 for ASME B31.1 and B31.3 piping codes and will be commercially available in a later release after official release of ASME B31J.
Tee flexibilities are not incorporated for all dynamic and SAM analysis
Analysis of models containing crosses with B31J enabled cannot be performed
This field is only available for ASME B31.1 and B31.3 piping codes, 2012 editions and later and works in conjunction with the selected model piping code.
This procedure cannot foresee all geometries and services possible and the use of competent engineering judgment may be necessary to extend the procedure to cover unusual geometries and service conditions to insure a safe testing environment.
Please see the following AutoPIPE help section:
Help > Contents> Contents Tab> Reference Information> Code Compliance Calculations> B31j
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