# How to fix and apply a load to an arbitrary point

**URL:** <https://community.freefem.org/t/how-to-fix-and-apply-a-load-to-an-arbitrary-point/3521>\
**Category:** General Discussion\
**Created:** [September 26, 2024, 3:05am UTC](https://community.freefem.org/t/how-to-fix-and-apply-a-load-to-an-arbitrary-point/3521 "2024-09-26T03:05:25Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Trueo](https://avatars.discourse-cdn.com/v4/letter/t/f6c823/32.png) [@Trueo](https://community.freefem.org/u/Trueo)\
**Post date:** [September 26, 2024, 3:05am UTC](https://community.freefem.org/t/how-to-fix-and-apply-a-load-to-an-arbitrary-point/3521/1 "2024-09-26T03:05:25Z")

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Hello.

In a 2-dimensional beam problem  
Set the displacement of any point to 0.  
I apply a load to an arbitrary point.

I would like to calculate the strain energy and displacement in this case.  
Is it possible to select an arbitrary point, displace it, and set the load on another arbitrary point?

The function “on” only fixes the boundaries, not the points defined for each label.

Thank you.

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**Author:** ![jbl](https://avatars.discourse-cdn.com/v4/letter/j/e47c2d/32.png) [@jbl](https://community.freefem.org/u/jbl)\
**Post date:** [October 2, 2024, 7:52am UTC](https://community.freefem.org/t/how-to-fix-and-apply-a-load-to-an-arbitrary-point/3521/2 "2024-10-02T07:52:43Z")

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Hello,

This topic may help you : [Fix/Pin nodes as boundary condition](https://community.freefem.org/t/fix-pin-nodes-as-boundary-condition/1596).

Using the example describe in this topic, you can set a displacement on degrees of freedom that are the intersection of 2 border.

If you want to do this on any degrees of freedom you need to find a way to identify the ID of your point in your finite element space.

I hope this helps.

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**Author:** ![Trueo](https://avatars.discourse-cdn.com/v4/letter/t/f6c823/32.png) [@Trueo](https://community.freefem.org/u/Trueo)\
**Post date:** [October 9, 2024, 6:41am UTC](https://community.freefem.org/t/how-to-fix-and-apply-a-load-to-an-arbitrary-point/3521/3 "2024-10-09T06:41:09Z")

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Thank you very much.