Lara Alegria Mira's Page

Lara Alegria Mira replied to Lara Alegria Mira's discussion Analyse component returns NaN (but is not red) in the group karamba

"Hi, I tried it on a simple example and it doesn't seem to be working for what I want. The component doesn't accept spring cross sections, only elements from the beam type and because it won't introduce a zero-length beam…"

yesterday

Lara Alegria Mira replied to Lara Alegria Mira's discussion Analyse component returns NaN (but is not red) in the group karamba

"Hi Clemens, Do you think the felting component should be working for what I want? Best Lara"

Monday

Lara Alegria Mira replied to Lara Alegria Mira's discussion Analyse component returns NaN (but is not red) in the group karamba

"Hi Clemens, The Rhino file is attached (it was also in my first discussion post). Thanks!!!"

Jun 13

karamba replied to Lara Alegria Mira's discussion Analyse component returns NaN (but is not red) in the group karamba

"Hi Lara, could you please internalize the geometry or add the corresponding Rhino file? There is a problem with the felting component for it shouldn't crash despite of the fact that there is no geometry. Thank's for the…"

Jun 13

Lara Alegria Mira commented on Mostapha Sadeghipour's blog post MATLAB + Grasshopper

"Hi everyone, For now I am successful in letting matlab and grasshopper communicate to each other through the writing and reading of .csv files or .txt files. I now want to go a step further and introduce this in an optimisation…"

Jun 11

Lara Alegria Mira posted a discussion

Matlab + GH

Hi everyone, For now I am successful in letting matlab and grasshopper communicate to each other through the writing and reading of .csv files or .txt files. I now want to go a step further and introduce this in an optimisation algorithm, meaning many loops from matlab to grasshopper and back. Matlab is writing a .csv file that is read into grasshopper. The output in grasshopper is saved as a .txt file and used in matlab. The problem is that I have to put a pause after the csv writing in…See More

Jun 11

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Lara Alegria Mira replied to Lara Alegria Mira's discussion Analyse component returns NaN (but is not red) in the group karamba

"Hi! I tested the element felting component. But I don't think it works. See attached. I put the snap length at really small because the elements must be generated at the intersection points to introduce zero-length springs. What…"

Jun 10

karamba replied to Lara Alegria Mira's discussion Analyse component returns NaN (but is not red) in the group karamba

"The 'element felting component' should work like described above. Did you test it? Best, Clemens"

Jun 6

karamba replied to Lara Alegria Mira's discussion Analyse component returns NaN (but is not red) in the group karamba

"If you put the above described geometry into a LineToBeam component nodes 1 and 3 will be merged by default. In case you specify a negative number for 'LDist' the nodes will not be merged. The same is true for the assemble-component and…"

Jun 6

karamba replied to Lara Alegria Mira's discussion Analyse component returns NaN (but is not red) in the group karamba

"Specify the spring stiffnesses in such a way that no kinematic system results. Analyse the model with the Eigenmodes component in order to make sure that your model has no loose parts. Experiment with different values for your spring stiffnesses. If…"

Jun 6

Lara Alegria Mira replied to Lara Alegria Mira's discussion Analyse component returns NaN (but is not red) in the group karamba

"I thought that maybe the "element felting component" can work. But does that work also for beams elements that intersect (at different points but with the same coordinate) (coinciding nodes)? "

Jun 4

Lara Alegria Mira replied to Lara Alegria Mira's discussion Analyse component returns NaN (but is not red) in the group karamba

"Is it like this: If a beam is connected from nod 0 to 1 and from 1 to 4. Another from 2 to 3 and from 3 to 5. Node 1 and 3 have the same coordinates, but are they rigidly connected or not?"

Jun 4

Lara Alegria Mira replied to Lara Alegria Mira's discussion Analyse component returns NaN (but is not red) in the group karamba

"Okay, but if I convert these zero-length beam elements into springs (adding the spring cross-section to the cross section input of the assembly component). The analyze component turns red. Is that because the vertices, where the beams come…"

Jun 4

karamba replied to Lara Alegria Mira's discussion Analyse component returns NaN (but is not red) in the group karamba

"Hello Lara, your model contains beam elements of zero length (one can see this by disassembling the model and checking the length of the beam axes). These zero length beam elements are infinitely stiff and therefore lead to a NaN (= Not a Number)…"

Jun 4

Lara Alegria Mira added a discussion to the group karamba

Analyse component returns NaN (but is not red)

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 geometry is taken as the base for a scissor structure. I am not yet introducing the scissors (hinges with zero-length springs) and everything is supposed to be rigid (also the supports).But the analyse component is not returning any value. How come?I have a lot of coinciding points (that is necessary…See More

Jun 3

12 Comments

Lara Alegria Mira replied to Lara Alegria Mira's discussion Sets of beam in the group karamba

"Thanks a lot for this clear information!! This is very helpfull!!"

May 31