Instability (of type 3)

[Anonymous]

Hello there,

I have constructed a model for a helical stair design on robot but I am having an issue resolving a type 3 failure at 1 particular node. This tends to be located at the mid-flight landing or at the very top of the stair. I have attached a picture to highlight this. Essentially I am wondering if this will have a significant impact on my results and if so is there any way to fix it? Any help would be much appreciated.

Kind Regards

Mark

[Anonymous]

Hello there,

I have constructed a model for a helical stair design on robot but I am having an issue resolving a type 3 failure at 1 particular node. This tends to be located at the mid-flight landing or at the very top of the stair. I have attached a picture to highlight this. Essentially I am wondering if this will have a significant impact on my results and if so is there any way to fix it? Any help would be much appreciated.

Kind Regards

Mark

[Rafal.Gaweda]

Try this:
http://forums.autodesk.com/t5/robot-structural-analysis/claddings-creating-unstability-type-2/m-p/54...
if not - send us the model

[Anonymous]

Hello there,

I have constructed a model for a helical stair design on robot but I am having an issue resolving a type 3 failure at 1 particular node. This tends to be located at the mid-flight landing or at the very top of the stair. I have attached a picture to highlight this. Essentially I am wondering if this will have a significant impact on my results and if so is there any way to fix it? Any help would be much appreciated. I should also add that if I decrease the number of divisions of my mesh, the failure message changes from type 3 to type 2.

Kind Regards

Mark

[Rafal.Gaweda]

3 times the same question is enough.
Look here:
http://forums.autodesk.com/t5/robot-structural-analysis/instability-of-type-3/m-p/5460862#M29178

[Anonymous]

Apologies,

My computer crashed each time I tried to post and I was unaware it had worked. I will try this method and let you know how I get on.

Thanks very much

Mark

[Anonymous]

Apologies but the issue still has not been resolved using the skyline solver as I am still getting a type 3 failure.

Would it be possible for you to have a look at the model and advise me on the best possible solution?

Thanks again for all your help!

Regards

Mark

[Rafal.Gaweda]

Yes, post \ send us the model

[Rafal.Gaweda]

Correct model size first