Hi,
the problem is that, by removing only the bodies, the links that are bound
to such bodies will have dangling pointers. For the time being you can
remove the relative links by doing something like:
Before the simulation loop:
*myfoot = mysystem.SearchBody('M-410iB-300
-3/M-410iB-300-12-1')myfoot_linklist = []for link in
mysystem.Get_linklist(): if (chrono.CastToChLinkMateGeneric(link)):
mate_link = chrono.CastToChLinkMateGeneric(link) if
(mate_link.GetBody1() == myfoot or mate_link.GetBody2() == myfoot):
myfoot_linklist.append(mate_link)*
*removed = False*
and in the simulation loop
*while(vis.Run()): vis.BeginScene() vis.Render()
mysystem.DoStepDynamics(0.001) vis.EndScene() if mysystem.GetChTime()
> 1 and not removed: mysystem.RemoveBody(myfoot) for link in
myfoot_linklist: mysystem.RemoveLink(link) removed = True*
However, we may add an option to *ChSystem::RemoveBody* to optionally take
care also of attached links.
BTW, we are going to update that spider_robot demo soon with the latest API
changes.
Il giorno sabato 13 gennaio 2024 alle 09:13:51 UTC+1 [email protected] ha
scritto:
> Hello everyone.
>
> I custom modeled a wheelbarrow in solidwork and installed a motor on each
> wheel. As shown in the picture below. Where A,B, and C are the parts of the
> wheel and body. 1️⃣ and 2️⃣ indicate universal joints.
> After the modeling is complete, simulate in the pychrono simulator. I want
> to delete 2️⃣ and C at some point in the car's motion. Using this method
> Chsystem. Removebody () (HTTP: / /
> https://api.projectchrono.org/classchrono_1_1_ch_system.html#a6bcfccb9a810168596f0a53e02a8
>
> 7b58). When I used it, it seemed to delete the unexpected "body" except for
> 2️⃣ and C. And the simulation freezes. Am I using it in a wrong way?
> I use the official documentation spiders code examples (
> https://api.projectchrono.org/tutorial_pychrono_demo_spider_robot.html).
> I found that this problem also occurred, I deleted "bbody", but only left
> bbody. Remove the arm part of spider, it will also get stuck.
> Am I using it in a wrong way? Please help me take a look, thank you very
> much!!
> (video link:https://youtu.be/ewbHQHve4AE)
> Regard,
> Jay[image: CleanShot 2024-01-13 at [email protected]]
>
>
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