algorithmic modeling for Rhino
karamba is an interactive, parametric finite element program. It lets you analyze the response of 3-dimensional beam and shell structures under arbitrary loads.
karamba is being developed by Clemens Preisinger in cooperation with Bollinger-Grohmann-Schneider ZTGmbH Vienna.
Download the free version for non-commercial use only. In case you want to purchase a commercial license contact us via info@karamba3d.com or read the manual for details.
download, manual:
http://www.karamba3d.com/downloads or
http://www.food4rhino.com/project/karamba
examples (require GH 0.9.0014):
http://www.karamba3d.com/category/examples/
update report/known bugs:
http://www.grasshopper3d.com/group/karamba/page/new-features-and-bug-fixes
Here a beam structure based on stream-lines with bending moments:
More details, manual, examples and download ....
Hello,I am trying to use Karamba to calculate the structure you can see in the attached image. For the time being, all nodes are considered fixed and then hinges are added through the beam joint…Continue
Tags: karamba, network, structure, hinges, jonts/
Started by yousef anastas. Last reply by yousef anastas yesterday.
Hi.Any news of being able to export shell elements to Robot? As panels or similarly? It's been a while, since I last asked, so I thought I would try again :)Cheers RasmusContinue
Started by Rasmus Holst yesterday.
Hi,Is it possible to reduce the number of elements for eigenmode calculation? I'm only interested in where the whole structure would buckle (global eigenmode?), where a node would be deformed out of…Continue
Started by Johan Reissmuller. Last reply by Johan Reissmuller Aug 13.
Hi!I have a few problems that I'm troubleshooting in my GH/karamba definition which we're using for form finding in structural optimization. Please view illustration and attachments.1. Bar forces…Continue
Tags: help, releases, joints, output, Model
Started by Johan Reissmuller. Last reply by Johan Reissmuller Aug 8.
Comment
Thanks! I will make sure to direct any further queries to the discussion forum, but my many thanks for getting it working :)
Hi Felicity...this would be better on the discussion forum than here. But it was because your vertical members weren't broken down, they were all one element. You needed to break them down to intersect with the horizontals. See attached for a method of doing this (disclaimer - there are probably slicker ways of doing the intersect). I believe the model runs now. grasshopper11_jjs.gh
Hi All,
I am trying to create a parametric 3D framed structure, although am struggling with the error "singluar stiffness matrix: cannot solve static problem" at the analyze model stage. Any help would be greatly appreciated. Here is the GH file grasshopper%2011.gh.
Hi Robert,
the solver currently used in Karamba is a direct solver.
Did you check the memory usage when computing your model? If the machine runs out of physical memory it starts to use the hard disk which makes the solution process very slow.
A PCG solver would be a good idea. Maybe I find a good one for the next release.
Best,
Clemens
Hi karamba-team,
I couldn't find the exact solver type you are using for the global equation system, but I guess it's a direct solver since the computation time increases heavily when exceeding 30000 nodes on my PC. Do you plan to integrate an iterative solver like PCG or similar in the next releases that steps into place when the model gets larger? For my uses this would be a great asset on your already great program because in complex models I cannot reach a mesh-independent solution without killing my PC for many hours...
Thank you,
Robert
Dear Clemens,
Could I enjoy that one-month trial license? I need to try beam joints components.
Thank you very much.
it would be better to test full version , thank you for your cooperation , here is my email : blumen.sy@gmail.com
thanks again
Dear Kaz, you can run the examples them with the trial-version by decreasing the number of elements or use the free version when only beams are involved. Alternatively I can send you a one-month trial license for the full version.
Best, Clemens
All examples files are restricted in trial version , how to test it ?
Hi there,
long time no comments!
Dear Clemens,
This is actual proper that karamba have some rules for defining the relations between components, from points to lines, lines to surfaces, surfaces to forms and volumes and so on. except from manual which you've released before, is there any references you know, we could adapt our models to, for writing algorithms more accurate?
Thanks,
Mahdi
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