[ODE] Exploding Model

[DjArcas]

I've had problems with the hinge joint, in simulations that work perfectly
with a constrained ball joint... perhaps the hard removal of DOF could cause
this?

----- Original Message ----- 
From: "BlackEye0210 BlackEye0210" <blackeye0210 at hotmail.com>
To: <marty at rabens.com>; <ODE at q12.org>
Sent: Tuesday, March 09, 2004 12:02 PM
Subject: RE: [ODE] Exploding Model


> But I am having problems using the hinge type joint. At high speeds the
> joint tends to collapse --> bodies connected to the hinge joint tend to
fly
> out...
>
> How do I actually use the hinge type joint. Does the joint connect to the
> bodies based on the center of mass of each body?? or does it attach to the
> body's adjacent edges?
>
>
> >From: "Marty Rabens" <marty at rabens.com>
> >To: "'BlackEye0210 BlackEye0210'" <blackeye0210 at hotmail.com>,
<ODE at q12.org>
> >Subject: RE: [ODE] Exploding Model
> >Date: Mon, 8 Mar 2004 14:28:29 -0600
> >
> >Well, assuming your units are meters, if you drop a human from a height
> >of 1000 meters, having it explode into pieces sounds pretty realistic to
> >me.  ;o)
> >
> >Seriously, though, it sounds like you're just having stability problems,
> >due to the extreme velocity you likely have at contact.  Read the FAQ
> >entry for making stable simulations
> >(http://q12.org/cgi-bin/wiki.pl?MakingStableSimulations).
> >And you may just need to make your world step size smaller.
> >
> >Regards,
> >   Marty Rabens
> >
> >
> > > -----Original Message-----
> > > From: ode-bounces at q12.org [mailto:ode-bounces at q12.org] On Behalf Of
> > > BlackEye0210 BlackEye0210
> > > Sent: Monday, March 08, 2004 3:37 AM
> > > To: ODE at q12.org
> > > Subject: [ODE] Exploding Model
> > >
> > > Hi, I made a model of a human body using 15 segments of boxes and used
> > > ball
> > > hinges for the joints. I tried to make if fall from a height of 1000
> >but
> > > when it reaches the ground, all of the parts just explodes into
> >pieces.
> > > How
> > > do I avoid that. I have a theory that the engine already can't compute
> >for
> > > it since the forced experienced is so extreme.
> > >
> > > Please Help
> > >
> > > Thanks
> > >
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