# Help with setting up

**URL:** <https://prepomax.discourse.group/t/help-with-setting-up/2322>\
**Category:** General Questions\
**Created:** [December 26, 2024, 12:43pm UTC](https://prepomax.discourse.group/t/help-with-setting-up/2322 "2024-12-26T12:43:38Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Alueks](https://avatars.discourse-cdn.com/v4/letter/a/a88e4f/32.png) [@Alueks](https://prepomax.discourse.group/u/Alueks)\
**Post date:** [December 26, 2024, 12:43pm UTC](https://prepomax.discourse.group/t/help-with-setting-up/2322/1 "2024-12-26T12:43:38Z")

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Hi, I don’t know what I am doing wrong. I need help setting up analysis and getting the results.

I have a facesheet of glass epoxy with a hole in the middle. Then the facesheet is fixed at the bottom and a pin is put through the hole.

 ![image](https://global.discourse-cdn.com/free1/uploads/prepomax/original/2X/e/ee145ab950f3cf2e58a7ec725ae4409ef3d4d144.png)  
The layers fo the facesheet are -  
 ![image](https://global.discourse-cdn.com/free1/uploads/prepomax/original/2X/2/2d6d4a4c0259228685c5e6caa34bf036f2c68f1d.jpeg)

A real life experiment was done on the following facesheet and those were the results. – Ignore the red line.

 ![image](https://global.discourse-cdn.com/free1/uploads/prepomax/original/2X/e/ecec64afee6f1c38c35c004f5a08116aed31bd3e.png)

This is my discord - Alyeks#3503. I would be very grateful if I can get some guidance or help.

My model setup - [https://fileport.io/vVJx1CtPG2nW](https://fileport.io/vVJx1CtPG2nW) - file is too big to upload here.  
My problem is the results I am getting, amasingly high reaction forces.  
Thank you in advance.

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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:** [December 26, 2024, 3:09pm UTC](https://prepomax.discourse.group/t/help-with-setting-up/2322/2 "2024-12-26T15:09:48Z")

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You should request contact output too. As I said in the previous thread ([Help with setting up the analysis - #2 by FEAnalyst](https://prepomax.discourse.group/t/help-with-setting-up-the-analysis/2267/2)) you should avoid BCs on the contact surfaces. I would just use a rigid pin here.

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<div class="post-metadata">

**Author:** ![Alueks](https://avatars.discourse-cdn.com/v4/letter/a/a88e4f/32.png) [@Alueks](https://prepomax.discourse.group/u/Alueks)\
**Post date:** [December 27, 2024, 9:35am UTC](https://prepomax.discourse.group/t/help-with-setting-up/2322/3 "2024-12-27T09:35:06Z")

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Hi, my problem is getting the data after that. Because the reaction force I get is way way higher and it looks like there is some problem with the setup overall. Thats why I am asking for help.

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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:** [December 27, 2024, 3:17pm UTC](https://prepomax.discourse.group/t/help-with-setting-up/2322/4 "2024-12-27T15:17:30Z")

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Try without contact for now. You can replace it with compression-only constraint and pull from the other side: [https://www.youtube.com/watch?v=yYuvUbu6Sw8](https://www.youtube.com/watch?v=yYuvUbu6Sw8)

Or just load it directly to check if the reaction forces make sense.