Hi I am checking a previous colleagues model and am noticing some things that I would appreciate some assitance with.
It is a big model and I will upload it if required but hopefully I can get by without doing so.
The model is for the design of a sliding table and crane mat on a barge. All shell elements are modelled as a floor, steel, 300W. Is there a difference between a wall and a floor panel?
Second question, I have noticed that for the barge itself below deck, it consists of angle beams. There is no connections in the model but rather there are restraints put at the end of the angle beams. How adequate is this.
Thanks for the help
Is there a difference between a wall and a floor panel?
Wall - vertical, floor - horizontal
Panel - every orientation
Second question, I have noticed that for the barge itself below deck, it consists of angle beams. There is no connections in the model but rather there are restraints put at the end of the angle beams. How adequate is this.
Screen shot please.
Firstly with regards to above. So the structure type is panel therefore the orientation is okay, the material type is steel so obviously there is no reinforcement. Im just confused with as to why it would show reinforcement type?
byron86 wrote:
the material type is steel so obviously there is no reinforcement. Im just confused with as to why it would show reinforcement type?
Reinforcement Type is an independent properly and you can assigned or not to any panel with any material.But It can be only used for RC design for panels with concrete materials.
You may set "None" (N/A) on such panels.
There is no connections in the model but rather there are restraints put at the end of the angle beams. How adequate is this.
And looking at screen shot I am confused
By restrain you mean phisical connection with wall and or columns or bar type for design (I guess steel) as marked on screen shot?
In case of further conversation please send us model or at least part of model with these pieces.
As seen above currently there is a bar type with the buckling member length adjusted. It appears my colleague wouldve done this to model fixity without modelling a phyiscal connection to the wall ?
If u still confused ill upload it.
Thanks again
Ah okay, I am in the process of uploading the model. It still is in a messy state and will have to still solve some errors.
Will let you know when its done
apologies, the internet is quite slow. I reduced the size of the file by deleting the loads
Hint : it is much easier to navigate in model having global Z axis as height direction
I think everything is correct, beam is connected to wall (see blue numbers) so no buckling and lateral buckling defined in member type definition.
I am not sure if SLS check for such beam is required (activated in member type definition) because beam is connected to wall, but your choice.
great thanks. Rafal, so connecting nodes regardless of type panel-bar, volumetric-bar, bar on bar; pif theres a node between them then the two elements are considered fixed unless the degrees of freedom are altered?
Ah k thanks Rafal, appreciate the advice. I still have some geometry changes to make and some loading but I might need some help with regards to the meshing. I managed to get most of the errors away but continuosly get an instability type 2 or 3 error.
Secondly, is it recommened to use Robot up to 2 decimal places ?
Ah k thanks Rafal, appreciate the advice. I still have some geometry changes to make and some loading but I might need some help with regards to the meshing. I managed to get most of the errors away but continuosly get an instability type 2 or 3 error.
File needed to check.
Secondly, is it recommened to use Robot up to 2 decimal places ?
Programs operates on 15 digits, 2 after comma are displayed as a default, you may display 9 if you want.
Ah, lots of eureka moments here. Thanks the hints are very helpful.
I have uploaded the file here
http://www.4shared.com/zip/d5hA8Dlvce/Barge.html
Most of the recommended settings for meshing I have used. Both in the job preferences and in the meshing options.
Thanks again