AutoPIPE Wiki 02. AutoPIPE's ADL PIPE Translator Limitations

02. AutoPIPE's ADL PIPE Translator Limitations

	Applies To
	Product(s):	AutoPIPE,
	Version(s):	2004, XM, & V8i
	Area:	import
	Original Author:	Bentley Technical Support Group

Conversion Limitations for AutoPIPE's ADL Pipe translator

Note: The following information was copied directly from the a document that was placed on the computer when AutoPIPE and the translators were installed:

C:\ Bentley\ AutoPIPE Translators\ ADLPipe Translator\ ADLPipe to AutoPIPE Translator User Reference.pdf

1. Some supports do not translate. Warnings are given where these occur.

2. ASME Mixed Class analysis, and Displacement Time History analysis are supported by AutoPIPE but is not supported by the translator.

3. Sub Space iteration is not supported by AutoPIPE.

4. An ADLPipe elbow/bend can have up to 9 mid points whereas AutoPIPE supports only 1 node point. Elbow mid points are not translated.

5. All note instructions are ignored and no comments are brought forward.

6. A PIPE or CH instruction with either of I1, I2 or both missing or set to zero is not supported.

7. Limited support for Mitre bends is given.

8. Type of all valves and flanges imported is set to Non Standard. No pressure rating available in ADLPipe.

9. BEAMS are imported as RIGID pipes so section properties are not mapped.

10. A ‘0’ cannot be supported as a node number in AutoPIPE. Change the node number in the ADLPipe file before importing.

11. The Anchor instruction is to be used to define the relative positions of the Anchor points. If it is used with 0,0,0 as the X Y Z coordinates then all other points will be with reference to this as the origin. If another Anchor instruction is specified with 0,0,0 then this will also be located at the origin. In ADLPipe ‘0’ sometimes means ignore or do not change, AutoPIPE takes this as meaning zero. Either delete the anchor locations without correct coordinates or remove the 0,0,0 from the definition.

12. The stress range reduction factor ‘f’ is mapped to a default value of 1.0 in AutoPIPE as there is no NTL field available to map the actual value.

13. Only fully defined user SIF instructions can be supported. Partially defined SIF’s are ignored.

14. ADLPipe has no limit on the number of load cases. AutoPIPE does!

15. Mapping for several NEWFILE types not available in AutoPIPE.

-> NEWFILE methods we are able to map are:

ADLPipe Method = 1 Square root sum of squares (SRSS)

= 2       Algebraic sum
= 3       Absolute sum
= 4       Absolute value of algebraic sum
= 9   Peak search

-> Methods not currently supported.

ADLPipe Method = 5 Sum of signed (F1) and unsigned (F2) load sets

= 6       Difference (Range)
= 7       Absolute value of range
= 8       Factorin
= 10     Maximum +ve search
= 11     Maximum -ve search
= 12     Remove file from tape 14
= 13     Maximum +ve search for support and restraint
= 14     Maximum -ve search for support and restraint
= 15     Absolute difference

16. AutoPIPE can only have one sustained case, so if there are multiple DEADWEIGHT load cases in ADLPipe input, we only consider the first one.

17. ACCELERATION (static earthquake) is mapped to Occasional load in AutoPIPE. Its value is fixed and cannot be changed as in ADLPipe, so we just take forward the initial value at first node in the model and ignore all the changes.

18. Multiple Response Spectra analysis is supported by AutoPIPE but mapping is currently not available.

19. For spectrums interpolation Lin-Log method is not supported by AutoPIPE.

20. The stress summaries are translated from ADLPipe and written in an XML file in the same model directory. These summaries are available for ASME Class 1, 2 and 3. Stress Summary for B31.1 is not supported in AutoPIPE.

The stress summaries contain load case combined. Every equation expects a particular type of load cases that can be combined to give stress report. If the load cases supplied by the user are not of the correct type, AutoPIPE may not accept these load cases from the translated .XML file.

The translated stress summary contains service levels, load cases and number of cycles for which the load cases are combined per equation

22. Valves may be extra large when imported into AutoPIPE. That is how ADLPipe deals with increasing stiffness at valves. May need to update the AutoPIPE model values manually.