# Output reaction forces only

**URL:** <https://calculix.discourse.group/t/output-reaction-forces-only/3809>\
**Category:** Code development\
**Created:** [March 2, 2026, 1:22pm UTC](https://calculix.discourse.group/t/output-reaction-forces-only/3809 "2026-03-02T13:22:50Z")\
**Posts on this page:** 1\
**Showing post:** 47

<div class="post-metadata">

**Author:** ![johanngil](https://avatars.discourse-cdn.com/v4/letter/j/779978/32.png) [@johanngil](https://calculix.discourse.group/u/johanngil)\
**Post date:** [March 16, 2026, 9:28pm UTC](https://calculix.discourse.group/t/output-reaction-forces-only/3809/47 "2026-03-16T21:28:35Z")

</div>

I checked some of the problem cases where I struggled in the past with the “RF” output. Some of them dealt with gravity loads (e.g. [CCX gravity problem?](https://calculix.discourse.group/t/ccx-gravity-problem/1738) ). For the mentioned gravity problem example the output for RF and RR is equal because there is no point load, only a distributed load through \*DLOAD. Is that what you want to achieve through your development as you mentioned in your initial post in this thread to adress the **point** loads only?

Here the box gravity model with some additional output like mass and RR:

```auto
*node
1, 0., 0., 0.
2, 10., 0., 0.
3, 10., 10., 0.
4, 0., 10., 0.
**
5, 0., 0., 10.
6, 10., 0., 10.
7, 10., 10., 10.
8, 0., 10., 10.
**
9, 5., 0., 0.
10, 10., 5., 0.
11, 5., 10., 0.
12, 0., 5., 0.
**
13, 5., 0., 10.
14, 10., 5., 10.
15, 5., 10., 10.
16, 0., 5., 10.
**
17, 0., 0., 5.
18, 10., 0., 5.
19, 10., 10., 5.
20, 0., 10., 5.
**
*nset, nset=bottom
1, 2, 5, 6, 9, 13, 17, 18
**
*element, type=c3d20, elset=cube
1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
16, 17, 18, 19, 20
**
*material, name=steel
*density
7.8E-09
*elastic
210000, 0.28
**
*solid section, elset=cube, material=steel
**
** +++++++++++++++++++++++++++++++++++++++
*step
*static
1.,1.,1.E-05,1.
**
*boundary, op=new
bottom, 1, 3, 0
**
*Dload
cube, Grav, -9800., 0.0, 1.0, 0.0
**
*node print, nset=bottom, totals=Yes
rf, RR
**
*node file
rf, u, RR
*el file
s, e
*EL PRINT, TOTALS=YES, ELSET=CUBE
EVOL, EMAS
*end step

```

---

_[View the full topic](https://calculix.discourse.group/t/output-reaction-forces-only/3809)._