Wiki Page: Combinations involving User 1-140 are not correctly added in combinations with AutoPIPE

Applies To Product(s): AutoPIPE, Version(s): 2004, XM, & V8i Environment: N/A Area: Subarea: Original Author: Bentley Technical Support Group Logged November 2014, AutoPIPE V8i 09.06.01.10 Problem: When assigning Impose Support Displacement to Load-case = GR, analyze the model, and note the results for Gr+MaxP. Then change the assignment of the Impose Support Displacement from Load-case = GR to U1 (User1), analyze the model, and note the results for Gr+MaxP+U1. it has been noted that the results from GR+MaxP does not equal GR+MaxP+U1. Why? Answer: Using a very simple model like Walkthru.dat (copied to the AutoPIPE folder when the program was installed, default = C:\Bentley\AutoPIPE V8i SELECTseries\Examples ). Open the file and perform the steps: 1. Change the spring support at B01 to a V-stop support with 0.00 gap up and down. 2. Make the V-stop support the current node point in the model, Insert> Xtra Data> Impose Support Displacement> "Load-case to combine with" = GR, Translation = Y=1.0 in (25.4mm). 3. Delete the Anchor at B04 4. Select Load> Static Analysis Sets..> Modify analysis set #1, Remove T1, E1,and W1 load-case. 5. Analyze the model. 6. Add a new user Code Combination, GR: 7. Review the results for GR. 8. Save the file as, GR.DAT, and close the model. Now let us re-assign the impose support displacement from Gr to U1 and compare the results: 1. Open GR.DAT file from above. 2. Save file as GrU1.dat. 3. Modify the impose support displacement at node B01 from GR to U1. 4. Select Load> Static Analysis Sets..> Modify analysis set #1, Add U1 load-case. 5. Add a new user Code Combination, GR+U1 : 6. Review the results for GR+U1. 7. Compare the results from both model, the results were found to be Identical. Conclusion AutoPIPE correctly adds up the load-case providing the combinations are correctly configured, the results will match as shown above. 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!