# Bolt Preload Results Measure

**URL:** <https://prepomax.discourse.group/t/bolt-preload-results-measure/2198>\
**Category:** General Questions\
**Tags:** results\
**Created:** [November 20, 2024, 11:33am UTC](https://prepomax.discourse.group/t/bolt-preload-results-measure/2198 "2024-11-20T11:33:36Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Mechgru](https://avatars.discourse-cdn.com/v4/letter/m/958977/32.png) [@Mechgru](https://prepomax.discourse.group/u/Mechgru)\
**Post date:** [November 20, 2024, 11:33am UTC](https://prepomax.discourse.group/t/bolt-preload-results-measure/2198/1 "2024-11-20T11:33:36Z")

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Hi,  
I’ve been using bolt preload for some time now, but one thing I really miss is to be able to track the load. Is this measure available in History output?

Thanks,

Rod

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**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\
**Post date:** [November 20, 2024, 5:58pm UTC](https://prepomax.discourse.group/t/bolt-preload-results-measure/2198/2 "2024-11-20T17:58:54Z")

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You can add \*SECTION PRINT using the Keyword Editor to get the bolt force: [https://youtu.be/ZSDf1bNXo8g?t=505&si=Paw7BI2348\_g\_q\_2](https://youtu.be/ZSDf1bNXo8g?t=505&si=Paw7BI2348_g_q_2)

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<div class="post-metadata">

**Author:** ![Mechgru](https://avatars.discourse-cdn.com/v4/letter/m/958977/32.png) [@Mechgru](https://prepomax.discourse.group/u/Mechgru)\
**Post date:** [November 21, 2024, 1:18pm UTC](https://prepomax.discourse.group/t/bolt-preload-results-measure/2198/3 "2024-11-21T13:18:40Z")

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Hi, thanks for the link to the tutorial. I have tried editing the keyword, but all I get is the message ‘keyword SOF unknown’ in the command window.

This is the keyword I added:  
\*Section print, Surface = Bolt-1, Name = SP1, SOF  
\*Section print, Surface = Bolt-2, Name = SP2, SOF  
\*Section print, Surface = Bolt-3, Name = SP3, SOF  
\*Section print, Surface = Bolt-4, Name = SP4, SOF  
\*Section print, Surface = Bolt-5, Name = SP5, SOF  
\*Section print, Surface = Bolt-6, Name = SP6, SOF

The \*.dat file doesn’t contain any results from the bolt sections, only the reaction forces are reported.

The Calculix Manual (v2.20) mentions the following section force outputs SOF, SOM and SOAREA. In the video, only SOF is mentioned, but the result \*.dat file shows moments and areas in the results. Did you add the other keywords, or are all the results output only using the SOF keyword?

Thanks for your help,

Rod

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<div class="post-metadata">

**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\
**Post date:** [November 21, 2024, 1:59pm UTC](https://prepomax.discourse.group/t/bolt-preload-results-measure/2198/4 "2024-11-21T13:59:02Z")

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You have to add SOF below the keyword. Like this:

```auto
*Section print, Surface = Bolt-1, Name = SP1
SOF

```