Grasshopper

algorithmic modeling for Rhino

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: 867
Latest Activity: 11 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

Information of load/stress values for mesh points 12 Replies

Hey everyone!I have a pretty simple question:If I have my mesh which I analyse as a shell in karamba, is there a way of obtaining the information of how much stress forces act upon each seperate…Continue

Tags: values, stress, points, Mesh

Started by Cristina Nan. Last reply by Marinella Contestabile 11 hours ago.

Verifying results 4 Replies

Hi For my thesis project I am optimizing a folded steel plate structure in Grasshopper. For the structural calculations I use Karamba. Everything works fine and I get nice results, but when i verify…Continue

Started by Reinout van Arnhem. Last reply by Reinout van Arnhem 12 hours ago.

HOW TO ADD A SUPPORT IN THE MIDDLE OF THE BEAM 2 Replies

HIIf i want to add a support in the middle of the beam, i dont know how does it works.…Continue

Tags: SUPPORT, BEAM

Started by CHILEMENI. Last reply by CHILEMENI 16 hours ago.

meter vs millimeter

I wan't to have my design model in mm and structural model in meters in the same GH file. So does the scale set in the rhino file affect the accuracy of the calculations?  i.e my design model is…Continue

Started by tim sullivan yesterday.

Comment Wall

Comment

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

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

Comment by ma qingsong on January 30, 2017 at 6:45am

Hello Márcio,

Thank you for your answer.

Normally I have done as you said. But it's no relate to the thickness of the steel plate. I want to change the thickness of the steel plate to check the displacement of the waffle structure. I uploaded the part of the program. Could you help me finish the program? Thank you very much.

ma20170129.gh

Comment by ma qingsong on January 30, 2017 at 6:36am

Hello Márcio,

Comment by Márcio Sartorelli on January 30, 2017 at 5:54am

Hello Qinsong,

Do you have the steel plate mesh? If you do so you can use the Mesh Load component, setting the vector force to global in negative Z direction (the amplitude of the vector will be the mesh load (kN/m²).

In the component you can set the points of the mesh witch the load will be accounted, try to insert there only the upper nodes of your waffle structure.

Márcio

Comment by ma qingsong on January 30, 2017 at 5:47am

Hello:

I want to know how to make a program and analysis the structure of shell waffle covered with the steel plate.

I want to create the load for the steel plate(6 mm thickness) to check the displacement of the waffle structure.

I uploaded the schematic diagram and part of the program. Any suggestion? 

Please help me.

Thank you very much

Ma

ma20170129.gh

Comment by karamba on January 20, 2017 at 12:16pm

Hello Earth,

use the 'Prescribed Displacement'-component and 'InitialStrain' from the 'Loads'-component to define support settlements and pretension in elements respectively. For details see the manual. It can be downloaded from http://www.food4rhino.com/ or http://www.karamba3d.com/downloads/. Please open a new discussion in case of further questions.

Regards,

Clemens

Comment by Earth on January 20, 2017 at 11:33am

Hello Team Karamba,

I am relatively new to Karamba. I was wondering if Karamba can deal with pretension problems, or support settlement problem where the initial displacement of certain amount takes place that causes forces developed in the truss or frame members. 

Kind Regards.

 
 
 

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