Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: modeling Subarea: Original Author: Bentley Technical Support Group Dec 2014, AutoPIPE V8 09.06.01.10 Problem: How to model a Trunnion pipe support in AutoPIPE? Answer: There a couple different methods to model a Trunnion pipe support in AutoPIPE. Consider using one or a derivation of the following methods: Option #1: Please see the following AutoPIPE help section: Help > Contents> Contents Tab> Modeling Approaches> Modeling Approaches> Support> Model 2: Trunnion Support Option #2: Model a rigid Beam that does not include weight from the center of the pipe to the outside surface of the pipe. From this point, add another beam with specific section properties to the actual support location (i.e. anchor component or another beam that is part of a structural support system built in the model). Option #3: Similar to the Option #2 above, but with Piping components. a. Insert a Tee component at the node point, Tee type = Other, SIF in/ out = 1.00. b. On the Tee Branch insert a run of pipe to the outside surface of the main pipe run c. Select this short run of Pipe, Insert> Rigid options over range> : Include Weight = unchecked (OFF) Include Thermal Expansion = checked (ON) Wire frame View below: d. From the node point located on the surface of the pipe, insert User SIF value representing the welded connection and insert a pipe run, using updated pipe properties, to the actual support location (i.e. anchor component or another beam that is part of a structural support system built in the model). e. At the pipe surface interface where the trunnion is connected to the pipe insert a Reference Point: AutoPIPE V8i 09.06.01.xx and lower: Insert> Xtra Data> Reference Point> with "Report Reference Points results to AutoPIPE Nozzle/AutoPIPE Vessel" option checked ON. With AutoPIPE Advanced or Nuclear edition, using File> Export> Nozzle Loads to AutoPIPE Nozzle> evaluate stresses of trunnion on pipe. 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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