| Applies To | |||
| Product(s): | AutoPIPE, | ||
| Version(s): | 2004, XM, & V8i | ||
| Area: | Reporting | ||
| Original Author: | Bentley Technical Support Group | ||
Dec 2014, AutoPIPE V8i 09.06.01.10
Problem:
Does AutoPIPE displays "Von Mises combined stress" as well as "Tresca combined stress" on the output report?
Solution:
There are multiple answers to this question, but directly, yes, you can configure AutoPIPE to display Tresca and Von Mises stresses in the output report.
A. First, look at Tools> Model Options> Results> Total Stresses. Press the help button and select Total Stress (Oct/Max) link. O, represents the maximum octahedral shear (von Mises) stress. M, which is Max shear stress ( or Tresca code stress). You would need to run the analysis create and output report, Change this value and create another output report. These values are reported in the General Stress section of the output report.
B. You could use MSWord to combine the reports or have AutoPIPE do it for you by using the "Overwrite output file" option on the model options results dialog screen. The input in this field determines how AutoPIPE treats an existing batch report file (SYSNAME.OUT) for the current system. By default this option is enabled, and the existing OUT file will be overwritten each time a new batch report is generated. If the option is disabled, the existing OUT file will be appended to when the Batch report command is executed. Thus, the new batch report is added on to the end of the old OUT file. Be sure to always include the General Stresses and Analysis summary on the results output report to confirm which stresses are being calculated in the analysis.
C. With regards to the values being reported in the general stress section of the report, please see the following AutoPIPE help section:
Help > Contents> Contents> Reference Information >General Stress Calculations > Maximum Shear Stress. Notice the equation . Therefore the reported stress are Tresca stress divided by 2.
D. And yet another option, Please see the following AutoPIPE help section:
Help > Contents> Contents> Command Reference> User-Defined Code Combinations> Category> For all code options ….
You could create a user defined code combination using category = Von Mises that displays the results in the Code Compliance section of the output report but Von Mises stresses will be calculated for this combination are not compared to an allowable.