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algorithmic modeling for Rhino

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karamba

Karamba is an interactiv, parametric finite element program for shell and beam structures.

Current Version: 1.0.5 (February 14th 2014)

Website: http://www.karamba3d.com
Location: Vienna
Members: 452
Latest Activity: yesterday

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 ....

 

 

Discussion Forum

Free Nodes / Beam joints ? 6 Replies

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.

Eksport to Robot

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

Tags: Export, Robot, Karamba

Started by Rasmus Holst yesterday.

Modifying number of elements for Eigenmode calculation? 2 Replies

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.

Seek help with Model output, joints/releases 4 Replies

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 Wall

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You need to be a member of karamba to add comments!

Comment by Felicity Stewart on August 13, 2014 at 4:58am

Thanks! I will make sure to direct any further queries to the discussion forum, but my many thanks for getting it working :)

Comment by jjsolly on August 13, 2014 at 1:32am

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

Comment by Felicity Stewart on August 12, 2014 at 8:08pm

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.

Comment by karamba on August 5, 2014 at 11:14am

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

Comment by Robert Naguschewski on August 5, 2014 at 1:14am

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

Comment by pablo on May 21, 2014 at 11:23am

Dear Clemens,

Could I enjoy that one-month trial license? I need to try beam joints components.

Thank you very much.

Comment by Kaz on March 27, 2014 at 2:41am

it would be better to test full version , thank you for your cooperation , here is my email : blumen.sy@gmail.com

thanks again

Comment by karamba on March 25, 2014 at 1:31pm

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 

Comment by Kaz on March 25, 2014 at 10:48am

All examples files are restricted in trial version , how to test it ?

Comment by Mahdi Soheyli Fard on March 19, 2014 at 8:08am

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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