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Information

Karamba

Karamba is a parametric structural engineering tool which provides accurate analysis of spatial trusses, frames and shells.

Current Version: 1.2.2 (October 6 2016)

Website: http://www.karamba3d.com
Location: Vienna
Members: 810
Latest Activity: 15 hours ago

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 a free trial now! Licenses for educational or commercial purposes can be purchased at http://www.karamba3d.com/downloads/.

Stay up to date with the development of Karamba by joining our Grasshopper group where you can post your queries, requests or issues for Karamba.

 

downloads, manual:

http://www.karamba3d.com/downloads or

http://www.food4rhino.com/project/karamba

examples (for Karamba 1.2.2):

http://www.karamba3d.com/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

Karamba - user problems 149 Replies

please post here in case of karamba problems !Continue

Tags: problems, faq, karamba

Started by karamba. Last reply by karamba 15 hours ago.

Location of the supports in the cross-section

Dear Karamba users,I have a problem with the location of supports in the cross-section of my structure. I have made a simple girder bridge structure consisting of two longitudinal steel girders,…Continue

Tags: section, cross-section, location, cross, supports

Started by Edward Fransen on Thursday.

Tie rod problem

Hi, I try to modelize a bridge with an arch and some tie rods which are not vertical. But my tie rods are not reacting like I wish. So I made very simple model. A top beam that symbolize the arch, a…Continue

Tags: karamba, tie rod

Started by Gregldr on Thursday.

Nonlinear concrete analysis

Hello,Is it possible to modify second-order analysis so that Karamba would use stiffnesses calculated using a custom VB-code block? I'm trying to create a nonlinear concrete column analysis using…Continue

Started by Tuomas Lehtonen Sep 18.

Comment Wall

Comment

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

Comment by Matthew Tam on May 8, 2017 at 12:43am

Hi Earth, if you wish to run multiple analyses automatically, you can look at either optimisation processes such as Galapagos or Octopus or you can simply use a Data Recorder to record your results.

Best,

Matthew

Comment by Earth on May 6, 2017 at 5:28pm

Hi all, is it possible to run 100 karamba analysis automatically using different values of variables? and record the results? Thank you.

Comment by karamba on April 8, 2017 at 4:36am

Hi Martin,

you could use short connector beams with corresponding joint definitions at their ends.

Please open a new discussion if you want to discuss the matter further. The comment wall is not so well suited for that.

Best,

Clemens

Comment by Martin Engdahl on April 4, 2017 at 12:09pm

Hi!

I just downloaded Karamba trial about an hour ago, and I cant get going with my model. I have an interlocking structure (eggcrated, see picture: there is an error in that the long beams should rest on the arcs, not the other way around as it is now) that is to be glued together. How would I set up an analysis like this? 

Comment by Silvia Picone on February 16, 2017 at 8:56am

I going to have a look! thank you Marcio Sartorelli! I have added a new discussion for my problem as Clemens suggested! I will write you under my new discussion later

Comment by Márcio Sartorelli on February 15, 2017 at 12:09pm

Hello Silvia,

For deck weight you should model a mesh of it and add a Mesh Load component including the nodes you want to consider (See Karamba manual for details, also in the previous comments I helped ma qingsong with a similar problem).

For wind and wave analysis you should first check for the structure vibration modes (For wind the first frequency should be >1.5Hz, i'm not sure what frequency band you need for waves). Grater stiffness and less mass helps to increase the frequencies. Once you achieved those results you can make a statical analysis considering these loads, again i'm not sure what to do for wave loads, but for wind I normally use the method used in this video: https://www.youtube.com/watch?v=-t3yE1xxMUo (it's a very simplified method, but do it's job).

I can take look on your GH definition tomorrow.

Comment by karamba on February 15, 2017 at 12:06pm

Dear all,

could you please add a new discussion in case of questions? Postings on the comment wall are hard to follow and not easy to find by others.

Best,

Clemens

Comment by Silvia Picone on February 15, 2017 at 10:28am

Hello everyone! 

I'm doing my final project to graduate in engineering. What I'm trying to project is a footbridge that sail along the coast supported with puncheons. I am new in Karamba. When I considerate loads I had problems how to considerate wave, wind loads and the deck weight. how can I simulated all these loads?

bordo%20linea%20strada.3dm

FootbridgeKaramba.gh

Comment by ma qingsong on January 30, 2017 at 7:09pm

Dear Márcio:

You are very friendly. Thank you so much.

I'm sorry about that I did not describe the problem right. My English is bad.

I means the waffle structure and 6mm steel plate are Welded together. They become the overall structure, and I give the strong power to the overall structure to check the displacement. As it is shown in the image, the green plate is the steel plate, the yellow is the waffle structure. The overall structure is the waffle structure and steel plate are Welded together. How to analysis? Could you help me finish the program again?

Thank you very much.

Comment by Márcio Sartorelli on January 30, 2017 at 7:12am

Hello Qisong,

See attached the changes I made. To parametrize the thickness of the plate you just need to multiply its material density with the thickness (going from kN/m³ to kN/m², or just from volume to surface load).

ma20170129.gh

 
 
 

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