Search found 8 matches

by Eric Greska
Thu May 02, 2013 6:47 am
Forum: OpenSim
Topic: Processing abilities for future OpenSim releases
Replies: 1
Views: 249

Processing abilities for future OpenSim releases

I am wondering if future releases of OpenSim will be coded to take advantage of GPU processing?

Thanks,

Eric
by Eric Greska
Wed May 25, 2011 8:37 am
Forum: OpenSim
Topic: jump simulation with opensim 2.2.0
Replies: 14
Views: 1930

RE: jump simulation with opensim 2.2.0

<t>I am not sure how you would accomplish the force increases in the static optimization step, but I would recommend making the increases within the RRA actuators and control constrants files (chapters 19 and 20), or within the model with either the muscle editor (chapter 9) or directly in the .osim...
by Eric Greska
Tue May 24, 2011 2:38 pm
Forum: OpenSim
Topic: jump simulation with opensim 2.2.0
Replies: 14
Views: 1930

RE: jump simulation with opensim 2.2.0

<t>Bruno,<br/> <br/> The collapse is the lack of the muscles to attenuate the forces created at impact. Keep gradually increasing the muscle forces until your model stays intact. My advice is to start a new subject folder with all of the required files (CMC, RRA, IK, etc...) each time you adjust the...
by Eric Greska
Sun May 22, 2011 2:32 pm
Forum: OpenSim
Topic: jump simulation with opensim 2.2.0
Replies: 14
Views: 1930

RE: jump simulation with opensim 2.2.0

<t>Bruno,<br/> <br/> I have successfully modeled this and had quite a few errors initially. The first item to consider is the fact that the models within OpenSim are set for gait analysis. With this thought in mind realize that the force generating capability of the model may not be ample to account...
by Eric Greska
Sat Mar 19, 2011 12:48 pm
Forum: OpenSim
Topic: Muscle Parameter Manipulation
Replies: 2
Views: 218

RE: Muscle Parameter Manipulation

<t>Mark,<br/> <br/> I am assuming that when you state that you are running the static optimization you are going all the way through the CMC. When you adjust the muscle and joint parameters are you only manipulating structural values (isometric force, lengths,...)? If so, your problem may lie in the...
by Eric Greska
Sun Nov 14, 2010 10:01 pm
Forum: OpenSim
Topic: Mac API version
Replies: 1
Views: 261

Mac API version

Ayman,

Has the build for the Mac API version been removed completely? I was hoping to attempt its use with my working models to see if it will process faster than the windows GUI version.

Thanks

Eric
by Eric Greska
Fri Sep 17, 2010 9:06 am
Forum: OpenSim
Topic: OpenSim - Startup Error
Replies: 18
Views: 2830

RE: OpenSim - Startup Error

If you have updated your Java through the Java update package, you will just need to add in (x86) to the Program Files so that it appears like this:

jdkhome="C:\Program Files (x86)\Java\jre6"

That should take care of it.
by Eric Greska
Wed Mar 10, 2010 8:58 pm
Forum: OpenSim
Topic: Visual 3D to OpenSim
Replies: 3
Views: 767

RE: Visual 3D to OpenSim

<t>Erin,<br/> <br/> I have experienced the same problems when using the export function from Visual3D to OpenSim. To help solve your two problems:<br/> <br/> 1. Recheck your model in Visual 3D to make sure your foot is in the correct plane. It may appear correct within the Visual 3D model window, bu...