Grasshopper

algorithmic modeling for Rhino

AMoments combined?

Hi,

Is it still the case that the AMoments component gives area properties for each input and cannot output combined properties of multiple regions like Rhino's AreaMoments command allows?

The last time I used this component it was necessary to tie the individual surfaces together with very narrow surface connectors to get combined properties, which is kind of a kludge.

Thanks,

Eric

Views: 624

Replies to This Discussion

Permalink Reply by Fred Becquelin on March 13, 2013 at 3:39pm

Huygens

I/x' = I/x + A * dist(x,x')²

Permalink Reply by Fred Becquelin on March 13, 2013 at 3:47pm

file attached

Attachments:
Permalink Reply by Eric Jolley on March 13, 2013 at 4:10pm

That seems very elegant.  However I'm getting different answers for Ix (around centroid) from the same curves using the Rhino AreaMoments command than from your definition.  Not sure what I'm doing wrong.

Eric

Attachments:
Permalink Reply by Fred Becquelin on March 13, 2013 at 4:38pm

my bad! connect the Y to the square input instead of X!
Christiaan Huygens is proud that you find his theorem elegant - indeed it is ;)

Permalink Reply by Eric Jolley on March 13, 2013 at 4:40pm

Nice!

RSS

About

Scott Davidson created this Ning Network.

Translate

Search

Photos

  • Add Photos
  • View All

Videos

  • Add Videos
  • View All

© 2024   Created by Scott Davidson.   Powered by

Badges  |  Report an Issue  |  Terms of Service