Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Reports Subarea: Original Author: Bentley Technical Support Group Typical question / issues with AutoPIPE's Output "Results Summary" Sub Report Item #1: Model is producing the following warning in the Results Report: Maximum displacement stress ratio = zero Answer: This is correct if the model meets the following criteria: A. Model/Segment does not contain any bends B. Under Tools Model Option Results Include axial force is disabled (checked OFF). Note : See the online help for information on Results Option: "Include axial force". Under these conditions, the pipe is free to move in the axial direction without any resistance due to friction on the supports. In addition, the "Include axial force" option is turned off as to not report any stress in the results. Avoidance: To see a Maximum Displacement stress in a model with no bends and/or "Include axial force" option disabled (checked Off) A. Under Tools Model Option Results Include axial force is enabled (checked ON). B. Add friction values to pipe supports and perform a Non-linear analysis which will consider Gaps/Friction/Soil. Item #2: When creating a output report with only results summary box checked the folowing is displayed: *** Summary not available *** TR Number: n/a Product: AutoPIPE Version: all Area: General, Problem ID#: 70711 Answer : The results summary option needs to have another report checked in order to provide a summary of the data. Example, in addition to the "Results Summary" options check one of the following reports: Displacement Support Restraint Forces_Moments Code Compliance General Stress etc... Item #3: There seems to be a unit issue in the Results Summary Output Report (please see below). It is written "Stress [N/mm2]" although it is clear that Ring Deflection and Flotation are not stresses and are not measured in [N/mm2]. Please also check that the conversion form imperial to metric units in this Output Report are correct. R E S U L T S U M M A R Y ---------------------------- Maximum HDPE Ring Deflection stress Point : F00 Stress N/mm2 : 0.0 Allowable N/mm2 : 0.0 Ratio : 0.46 Load combination : Ring Defl-HDPE{1} Maximum HDPE Flotation stress Point : F00 Stress N/mm2 : 0.5 Allowable N/mm2 : 10.5 Ratio : 0.04 Load combination : Flotation-HDPE{1} Answer: This is correct, ring deflection is in units of length only and flotation is in units of force/length. See Also Bentley AutoPIPE External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please submit any comments you have on this Wiki article to the "Comments" area below. THANK YOU!
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