karamba

Information

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

Current Version: 1.0.3 (March 13th 2013)

Website: http://www.karamba3d.com
Location: Vienna
Members: 320
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 some results from calculations with shells:

Fig. 1: Deformed geometry and color-plot of resultant displacements of double curved shell under point load.

Fig. 2: Principal stress lines in cantilevering shell and color plot of material utilization.

Fig. 3: Force flow lines in disc with hole in the middle and utilization of shell material.

More details, manual, examples and download ....

Discussion Forum

help request - fem.karambaPINVOKE 15 Replies

Hi, I have tried all combinations of plans a and b on page 79 of the manual but without success.The only thing I've tried so far is the Quick Start example from page 9.Win7, 64-bit.cheers,wimContinue

Started by Wim R.M. Dekeyser. Last reply by Jesper Hildebrandt Andersen yesterday.

Analyse component returns NaN (but is not red) 12 Replies

Hello, The model which is in attachment shows an NaN output at the Analyse component. Is this the same as if the component would turn red? How can I solve this? What is my file about:A polyhedron…Continue

Started by Lara Alegria Mira. Last reply by Lara Alegria Mira yesterday.

Print Karamba model with load values 1 Reply

Hi,I am trying to print an image of the model showing the load values, but the size of the numbers is too small to be read. If I use the toggle <ModelView><Display scales><Loads>…Continue

Started by Mira Conci. Last reply by karamba on Sunday.

Internal Forces from Modal Analysis 1 Reply

Hi Clemens,Was wondering if you could add a bit of clarity as to how the internal section forces resulting from a Natural Vibrations analysis are normalised? I have a hunch based on the values but…Continue

Started by Lucas Epp. Last reply by karamba Jun 12.

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Comment Wall

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Comment by Robert Vier on June 10, 2012 at 5:24am: hey djordje!

Tx, Ty, Tz represent the freedom of a support to move in x, y and z direction (T for translate). the same holds for Rx, Ry, Rz but for a rotation around the respective axis. those directions can also be determined by a reference plane other than the world xyz system.

Black means the degree of freedom is restrained, while white means it is free to move.

the symbols you see in the drawing are possibilities to more apparently visualize a special support situation, e.g. having a member on a rolling wagon etc..

you could also post requests in our discussion forum http://www.grasshopper3d.com/group/karamba/forum rather than on the board ;)

best

Comment by djordje on June 9, 2012 at 3:43pm: Support Conditions in Karamba

Few months ago, some member posted a preview of the Support Conditions in Karamba. Take a look:

I saved that image, but did not really understand it.

The black round circles, represent the option that should be checked? And what about the white circles? What do they represent?

Also the last part - hinged connections of the truss, I do not understand it. How to achieve the hinged connections among truss members?

Thank you.

Comment by pyrit on May 3, 2012 at 2:35am: hey

i did dl the latest version of karamba @ your old site, so that was outdated . with new version by http://www.karamba3d.com/ it works

thanx

Comment by pyrit on May 3, 2012 at 2:03am: hi @ll,

i have some probs with opening the example files.

e.g for LargeDeformationFormFinding_1.gh

maybbe you could ubdate - big thanks !

The archive contains an unrecognized object: Line to beam (karamba) {761b7152-1fb9-4b23-af3c-918d9c889da8}

This object cannot be deserialized

The archive contains an unrecognized object: Large deformation analysis (karamba) {346a8101-b0f3-4d61-b0e0-e85cdeb9d289}

This object cannot be deserialized

The archive contains an unrecognized object: Assemble Model (karamba) {fcd0a5ca-c3e5-433b-a2ad-ba41365116fd}

This object cannot be deserialized

Comment by David Shook on March 16, 2012 at 12:04am: Response from Karamba:

Karamba works on Rhino 32bit. It doesn’t do so for the 64bit-Version because the calculation core is a 32-bit-dll.

The next version of Karamba will work on 32 and 64-bit machines.

Comment by David Shook on March 16, 2012 at 12:04am: I am using Karamba for structural analysis and optimization. I've been moving my GH components over to Rhino 5 and I'm having trouble with the Analysis component. Here are the steps I've gone through (3 times now).

1. Install latest Rhino 5 beta 64-bit. Keep old Rhino 4 install.
2. Copy over GH component files from Rhino 4 since you cannot specify the install directory when installing GH. Add GH as a plug in for Rhino 5.
3. Install Karamba Free 0.9.083 to Rhino 4. I tried to install Karamba to Rhino 5 beta (under C:\Program Files\Rhinoceros 5.0 Beta (64-bit)\Plug-ins\Grasshopper\Components) but when I install no files appear in the directory.
4. Copy all Karamba files to Rhino 5 directory.

5. Start Rhino 5 and GH. Karamba appears in the toolbar and everything appears fine, but I receive the below error from the Analysis component:

Error: Solution exception: The type initializer for 'fem.karambaPINVOKE' threw an exception.

Comment by Mohammad Yazdi on November 11, 2011 at 10:23am: Absolutely great piece of work. I combined it with galapagos and it solved my problem in minutes! That was a 2 day work to export to Sap2000. Thanks for your beautiful work :)

~Moe

Comment by karamba on November 6, 2011 at 11:33am: I-sections should appear as I-sections, Boxes as boxes,...

Please post your definition in case karamba behaves differently.

Best, Clemens

Comment by sivam krish on November 4, 2011 at 8:22am: Is there a plan to make the sectional profiles visible ? currently they all appear to be tubes ?

Comment by karamba on November 2, 2011 at 2:56pm: Hello Najna,

you can use the MeshLoad-component to automatically generate point-loads from distributed loads.