Is it possible to do a pendulum analysis in Kangaroo with various weights, lengths and initial deflections?

[image] [image] Where’s the problem?

Like this: cinematica2_.gh (15.1 KB) For most applications you won’t need to set the ‘plane’ input of the rigid body component - by default it uses an XY aligned plane with its origin at the object centroid. The component also outputs this plane from its ‘P’ output, so if you want to a…

Why is the oscillation damped? cinematica3_.gh (33.4 KB) Now… more difficult: [image]

You can set the damping input on the Kangaroo solver to 1.0 [image]

See my reply here: [image] Modeling rotating hanging bead chains Kangaroo Hi @Bruce_Shapiro , Sorry I didn’t reply to your last post yet - I started writing something earlier, but it’s tricky to describe without going into a bit more detail about the way the Kangaroo solve…

thanks for the information on damping. [2020-11-18_12-21-38] how to make a double pendulum? [image] cinematica3_.gh (35.9 KB)

You can use pendulum equation and timer pendulum.gh (12.3 KB)

If you want a double pendulum, you need to include the end point of the top segment in the ‘Points’ input of that rigid body. cinematica3_.gh (28.4 KB)

Pendulum in Kangaroo

Grasshopper Kangaroo

DanielPiker (Daniel Piker) November 18, 2020, 12:15pm 12

This can also be done much more simply using length constraints:

simpledoublependulum.gh (11.2 KB)

Topic		Replies	Views
Pendulum - basic physics Kangaroo windows	3	1221	September 9, 2021
What would Galileo do? Kangaroo windows , physics	2	876	October 12, 2021
Find counterbalance point on an asymetric beam Kangaroo	8	1544	March 22, 2019
Kangaroo linkages GH for Mac	7	4687	May 5, 2020
Kangaroo Water bubbles :) Grasshopper rhino6 , kangaroo-2	27	7566	December 29, 2022

Pendulum in Kangaroo

Related topics