Problème de modélisation

[Anonymous]

Bonjour

Voici mon dessin, c'est celui du hauban d'une caténaire.

J'ai essayer de le représenter sur robot, mais le problème c'est qu'il y a un pb d'instabilité au noeud qui se trouve en bas à gauche. problème de type 3.

J'ai mis deux rotules sur les noeuds qui sont accrochés au poteau.

Je ne sais pas trop comment utiliser les relâchements, est ce que vous pourriez me dire où dois je mettre mes relachements

merci de votre aide et je suis présent pour répondrre à toutes questions.

Merci

[Artur.Kosakowski · Accepted solution]

Hope this helps.

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.

[Anonymous]

This is my model

CAN YOU HAVE A SOLUTION with this model ?

[Artur.Kosakowski]

Here you are.

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.

[Anonymous]

THERE IS an instability on the point 2 ( type 3 ) towards RZ....

thanks

[Artur.Kosakowski]

You have to decide what model type you need to use - is it going to be a 2D frame (all loads are in the plane of the frame) which I make screen captures for or a 3D Frame (loads applied in the perpendicular to the model direction as well). As your model is apparently 3D Frame (please attach it next time) then you have to reconsider the definition of the supports to prevent the model to rotate along the vertical (global Z) axis. You can e.g. in addition to blocked translation block RX and RZ too.

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.

[Anonymous]

I DO IT BUT I HAVE AN INSTABILITY in nodal 3 (type 1) in my programm

I  dont understand, me i have 2 DIFFERENT bars 1 and 5 are different and i need to validate bar 5.

[Anonymous]

But I think the first solution you give is a good one

But i want to know why i have a bigger arrow in my beam number 3.

And why if it's the same solution, i dont have the same results

[Artur.Kosakowski]

Please send me the model you created and describe what you get and what you would like to get please. I'm not sure if I understand what you mean by different results and by bigger arrow. Thank you.