Hello everyone.
I´m currently trying to calculate a steel joint using the Steel Joints addon.
In the "Results in Steel Joint" tab the forces used to calculate the strength of the joint appear on the side and I want to check if they are correct (see image bellow).
But I can´t seem to find the values of the internal forces for that node and the values I can see are presented member by member (see image bellow).
Is there any way to check if these values shown on the addon are correct or help me interpret the ones show in the static analysis?
Best regards,
Pedro
Hello Pedro,
thank you for your request. The forces are taken from the ends of the members (depending on supported end) except the shear forces. Here is a short example:
I hope that helps but if there are any questions left, please let me know it.
Best regards,
Thomas
1 Like
Hello @thomas.guenthel .
Thank you for the reply, it has been helpfull.
However, I still have some doubts regarding the interpretation of the results. I´m not sure if it´s related to the complexity of my connection, but I´m having trouble verifying the results.
As an example, I will send you the values I have for the axial forces on the joint I´m currently calculating (see the image bellow).
I will also send an image with the joint already designed (see image bellow).
I will also send the file so that you can see for yourself.
structure_joint.rf6 (2.2 MB)
Once again thank you for the fast reply.
Best regards,
Pedro
Hello Pedro,
where do you see problems with the forces? All shown forces of the blue arrows can be seen in CO3:
If you mean the axial forces on the +x side which are not shown in the joint then you need to change the supports of the model. At the moment both +x ends are supported. If you only support the -z member, it looks like this:
I hope I could help you with these information.
BR Thomas
1 Like
Hello @thomas.guenthel.
First of all, I want to thank you for the reply and the explanation, it has been very helpful.
I just want to check something: I have done another analysis for another joint and I checked the values with the ones obtained on the member ends.
For the combination CO3 I got the following results on node 9 :
Next, I went and checked the values in the joint for the same combination:
As you can see, almost all values match, except for the My value, wich is smaller than the value obtained above.
Where does this difference come from? Is it a reduction coefficient that is applied automatically?
Once again, I thank you for the explanations you gave before, I just want to make sure I understand it all.
I will also give you the model to see if I did something wrong.
structure_2.rf6 (2.8 MB)
Best regards,
Pedro
Hello Pedro,
as already mentioned, the forces are taken from the point on the member where the joint begins except the shear forces:
I’m happy to answer any question further available.
BR Thomas
1 Like
Hello @thomas.guenthel
Thank you very much for the explanation, it was very helpfull. I finally understand where the difference in the values came from.
Once again thank you for the time you dedicated to explain this topic.
Best regards,
Pedro
