Hi to everyone,
I have some problems with my model. Can I send it to someone who can help me with this problems? Is about a cable nets roofs nets, who has some instability problems, who may be because of not declaring the right degree of freedom (because of having a cable nets and a steel tube section in the model).
I really appreciate any help.
Solved! Go to Solution.
Solved by Artur.Kosakowski. Go to Solution.
Thanks for reply,
Firstly, I have isolated nodes that I can not delete them.... The secondly I have instability of type 2 for several nodes, which gives very large displacements, when I run static - nonlinear analysis (only from dead load).
In the image attached, is represented the cable nets and the rest are the steel tube sections.
Can I use compatible nodes option, when I have a cable intersection? I have a large deformation of the structure (above 2.5 m in some nodes from dead load); no errors appears when I run the statin-nonlin PD analysis.
I have tried different option... I have put additional towers to sustaint the structure and to have small deflaction, to abtain convergence results... but I have some problems with the model when I run the following analysis type:
- Seismic - P100-1/2006
- Spectral
- Time history analysis
- Push over
I have attached the model, if can someone help me with this problems.
Thanks in advance
You may consider some changes in the scheme of the model e.g.
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Still have some problems with the model. Can it be because of the analysis type? The nodes are not declared correctly for the seismic analysis, maybe (error 905 in my case)? Have you succeeded with the analysis? Maybe I have missed something
For a cable model you should have the assembly case with no. 1.
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Thank you for your work and advice. Is there any explanation of this? And can be performed a push over analysis for a given accelerogram (Vrancea for example) in case of cable structures like my model?
Thank you for your work and advice. Is there any explanation of this?
The limitation of internal architecture of the program.
And can be performed a push over analysis for a given accelerogram (Vrancea for example) in case of cable structures like my model?
Push over analysis for cable models is not supported.
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.