Hi,
I am working a model and I am getting error 2809, it seems to be something linked to the Modal analysis as when I delete this, there's no issue. However, I need this one the analysis. I checked everything I thought.
Could someone help me with this? Not sure how to fix it.
Solved! Go to Solution.
Hi,
I am working a model and I am getting error 2809, it seems to be something linked to the Modal analysis as when I delete this, there's no issue. However, I need this one the analysis. I checked everything I thought.
Could someone help me with this? Not sure how to fix it.
Solved! Go to Solution.
Solved by Krzysztof_Wasik. Go to Solution.
Hi Model is not supported. It causes static instability. For such model program cannot calculate normal modes.
Hi Model is not supported. It causes static instability. For such model program cannot calculate normal modes.
In my opinion supports are missing
I have deleted all load cases except load self-weight and run calculation. Refer to displacement presentation.
You have to define supports in the model. Otherwise all results will be incorrect.
In my opinion supports are missing
I have deleted all load cases except load self-weight and run calculation. Refer to displacement presentation.
You have to define supports in the model. Otherwise all results will be incorrect.
I would recommend defining elastic support within slab 400 thk thickness label.
Refer to
How to apply soil elasticity on a raft foundation created as a panel in Robot Structural Analysis
Definition procedure is presented also in the following video
I would recommend defining elastic support within slab 400 thk thickness label.
Refer to
How to apply soil elasticity on a raft foundation created as a panel in Robot Structural Analysis
Definition procedure is presented also in the following video
Hi @Krzysztof_Wasik, thanks for your response, I added the spring values to the raft slab. However, I am still getting weird values on my bending diagrams. Any idea why that could be happening?
Hi @Krzysztof_Wasik, thanks for your response, I added the spring values to the raft slab. However, I am still getting weird values on my bending diagrams. Any idea why that could be happening?
Which is member number with weird results. Could you explain what you expect.
Which is member number with weird results. Could you explain what you expect.
Hi @Krzysztof_Wasik.
I was expecting diagrams looking like the picture below as I didn't set up releases for my beams - the picture it is just an indicative from another model.
However I am getting bending (My) diagrams like this, it seems something is off with the model
Hi @Krzysztof_Wasik.
I was expecting diagrams looking like the picture below as I didn't set up releases for my beams - the picture it is just an indicative from another model.
However I am getting bending (My) diagrams like this, it seems something is off with the model
Members 44 to 48 are connected to "wall" members. Moment shows interaction with wall finite elements.
Members 44 to 48 are connected to "wall" members. Moment shows interaction with wall finite elements.
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