[ODE] Problem with rolling sphere...

Charles Ingalls Charles Ingalls" <charles.ingalls at freesbee.fr
Tue Dec 3 12:29:01 2002


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Here's my newbie problem.

Let's suppose a sphere rolling on a plane.
If I use this contact parameters:

contact[i].surface.mode =3D dContactBounce;
contact[i].surface.mu =3D dInfinity;
contact[i].surface.mu2 =3D 0;
contact[i].surface.bounce =3D 0.5;
contact[i].surface.bounce_vel =3D 0.1;

My sphere fall on the floor and roll again and again and never stop.

Does this mean that I must use a friction contact between the sphere and =
the floor ?
How could I do to set the good parameters for it ?

Or I must use air friction resistance ? How could I make this ?

Thanks for answering me...

Charles.


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<DIV><FONT face=3DArial size=3D2>Here's my newbie problem.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Let's suppose a sphere rolling on a =
plane.<BR>If I=20
use this contact parameters:</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>contact[i].surface.mode =3D=20
dContactBounce;<BR>contact[i].surface.mu =3D =
dInfinity;<BR>contact[i].surface.mu2=20
=3D 0;<BR>contact[i].surface.bounce =3D =
0.5;<BR>contact[i].surface.bounce_vel =3D=20
0.1;</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>My sphere fall on the floor and roll =
again and=20
again and never stop.</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Does this mean that I must use a =
friction contact=20
between the sphere and the floor ?<BR>How could I do to set the good =
parameters=20
for it ?</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Or I must use air friction resistance ? =
How could I=20
make this ?</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Thanks for answering me...</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Charles.<BR></FONT></DIV></BODY></HTML>

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