wooden frames with interlocking joint

Replies to This Discussion

Permalink Reply by Robert Vier on April 7, 2014 at 4:48am

What do you mean 'it showed something wrong always'

Sure you can build up a model in karamba, the interpretation is something different then...

Best,

Robert

Permalink Reply by qiushi on April 7, 2014 at 1:03pm

Analyze component error:

"1. Singular Stiffness-matrix: Can not solve static system.
Make sure that boundary conditions are set so that the structure can not move in rigid body modes.
When you analyze a flat shell structure lock the rotation perpendicular to the plate in at least one node.
Use the 'Eigen Modes'-component and activate the display of local coordinate axes: The first eigenmode will be the rigid body motion."

Attachments:

• karamba test.gh, 292 KB

Permalink Reply by Karamba3D on April 7, 2014 at 5:26pm

Dear Qiushi,

your model is not properly connected: It consists of 1200 disconnected parts. You can test that with the 'Connected Parts'-component.

In order to model the connections between the elements you could use the 'Element Felting'-component and specify a hinge on the connecting beams that get generated.

Generally it is a good idea to reduce the complexity and size of a model for debugging and testing.

Best,

Clemens

 

Permalink Reply by qiushi on April 8, 2014 at 1:13am

Thanks! Clemens!

What do you mean by reducing the complexity and size of a model, by reducing the size I guess you mean to scale it to a smaller one?

Permalink Reply by Robert Vier on April 8, 2014 at 1:34am

Reduce the number of elements to the minimum number capable of representing a certain aspect you want to look at..! So yes, scaling in terms of complexity, not spatial.

Permalink Reply by qiushi on April 8, 2014 at 11:31am

Thank you! Robert!

I am trying to simplify it. Have you ever seen any project using karamba analysis result to control the structural pattern density? Better send me a link.Thanks!