# History output (forces)

**URL:** <https://prepomax.discourse.group/t/history-output-forces/335>\
**Category:** Bug Reports\
**Created:** [August 1, 2022, 11:13am UTC](https://prepomax.discourse.group/t/history-output-forces/335 "2022-08-01T11:13:00Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![lukerickert](https://avatars.discourse-cdn.com/v4/letter/l/53a042/32.png) [@lukerickert](https://prepomax.discourse.group/u/lukerickert)\
**Post date:** [August 1, 2022, 11:13am UTC](https://prepomax.discourse.group/t/history-output-forces/335/1 "2022-08-01T11:13:00Z")

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Hi I am probably doing something wrong but I just ran a model with a few history outputs requests and I don’t find anything when I go to post process. I can create them in the post processing but I don’t see a way to make summed outputs. I am looking for is the total load from a particular contact interaction.

Any ideas? This is with the current release (1.3.4)

maybe I can pull them out of the results file manually somehow? (with pandas etc)

\*\* History outputs +++++++++++++++++++++++++++++++++++++++++  
\*\*  
\*Contact print, Totals=Yes, Master=Internal\_Selection-1\_Solid\_part-6\_to\_Solid\_part-1\_Master, Slave=Internal\_Selection-1\_Solid\_part-6\_to\_Solid\_part-1\_Slave  
CF  
\*Contact print, Totals=Yes, Master=Internal\_Selection-1\_Solid\_part-2\_to\_Solid\_part-5\_Slave, Slave=Internal\_Selection-1\_Solid\_part-2\_to\_Solid\_part-5\_Master  
CF  
\*Contact print, Totals=Yes, Master=Internal\_Selection-1\_Solid\_part-3\_to\_Solid\_part-5\_Slave, Slave=Internal\_Selection-1\_Solid\_part-3\_to\_Solid\_part-5\_Master  
CF  
\*Contact print, Totals=Yes, Master=Internal\_Selection-1\_Solid\_part-1\_to\_Solid\_part-4\_Master, Slave=Internal\_Selection-1\_Solid\_part-1\_to\_Solid\_part-4\_Slave  
CF  
\*\*

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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:** [August 1, 2022, 11:53am UTC](https://prepomax.discourse.group/t/history-output-forces/335/2 "2022-08-01T11:53:32Z")

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Right, I made a simple test model with just one contact pair and one history output request for CF and it seems that it works in older versions (up to 1.3.2) but doesn’t work now.

@Matej Could you take a look at this ?

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**Author:** ![lukerickert](https://avatars.discourse-cdn.com/v4/letter/l/53a042/32.png) [@lukerickert](https://prepomax.discourse.group/u/lukerickert)\
**Post date:** [August 1, 2022, 12:35pm UTC](https://prepomax.discourse.group/t/history-output-forces/335/3 "2022-08-01T12:35:46Z")

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thanks, it is indeed a bug (I pulled up the results file in 1.2.1 and it loads as expected with the history outputs.

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**Author:** ![Matej](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Matej](https://prepomax.discourse.group/u/Matej)\
**Post date:** [August 2, 2022, 12:18pm UTC](https://prepomax.discourse.group/t/history-output-forces/335/4 "2022-08-02T12:18:04Z")

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Indeed it is a bug. I fixed it, and it will be released in the next release version.

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**Author:** ![Matej](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Matej](https://prepomax.discourse.group/u/Matej)\
**Post date:** [August 9, 2022, 8:47pm UTC](https://prepomax.discourse.group/t/history-output-forces/335/5 "2022-08-09T20:47:59Z")

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