Search found 53 matches

by Colin Smith
Wed Aug 13, 2014 2:20 pm
Forum: Simbody: SimTK multibody dynamics API
Topic: Simbody3.3.1 make test errors compiled on Scientific Linux 6
Replies: 11
Views: 1109

Re: Simbody3.3.1 make test errors compiled on Scientific Lin

Sherm and Chris, Sorry I missed your replies to this and have gotten side tracked working on other projects, so I haven't gotten it working. I was trying to install the 64bit version. I just tried it with Sherm's Instrumentation and my result is exactly the same as Chris' (t=5.96747 power=1.1817e-06...
by Colin Smith
Fri Jul 04, 2014 11:07 pm
Forum: OpenSim
Topic: Error while hiding/showing wrapping surfaces
Replies: 10
Views: 3144

Re: Error while hiding/showing wrapping surfaces

Did you ever find a solution to this? I am having the same problem on my windows 8 laptop
by Colin Smith
Sat May 10, 2014 12:04 am
Forum: OpenSim
Topic: Prescribed Coordinates During CMC
Replies: 1
Views: 201

Prescribed Coordinates During CMC

Is there a way to prescribe a coordinate as function of time in the CMC tool? I am currently prescribing it in the .osim file, however the results show that the model is not following the prescribed function. I am using a SimmSpline with data from Inverse Kinematics.

Thanks,
Colin
by Colin Smith
Mon Mar 31, 2014 3:47 pm
Forum: Simbody: SimTK multibody dynamics API
Topic: Simbody3.3.1 make test errors compiled on Scientific Linux 6
Replies: 11
Views: 1109

Re: Simbody3.3.1 make test errors compiled on Scientific Lin

Sherm, I am using gcc 4.4.7 Thanks for your help. I tried building the Debug version, but the same tests failed. To check if the test was too strict, I added the following just above line 451: std::cout<<power<<std::endl; I trying to attach the output values I got from running this modified version ...
by Colin Smith
Tue Mar 25, 2014 2:11 pm
Forum: Simbody: SimTK multibody dynamics API
Topic: Simbody3.3.1 make test errors compiled on Scientific Linux 6
Replies: 11
Views: 1109

Simbody3.3.1 make test errors compiled on Scientific Linux 6

I compiled simbody without any errors on Scientific Linux 6, however, when I run make test, the following tests fail: The following tests FAILED: 183 - TestCustomConstraints (Failed) 184 - TestCustomConstraintsStatic (Failed) Errors while running CTest make: *** [test] Error 8 If I just run these te...
by Colin Smith
Tue Mar 11, 2014 9:53 am
Forum: OpenSim
Topic: CMC same excitation for multiple muscles
Replies: 3
Views: 490

Re: CMC same excitation for multiple muscles

OK, thanks for the info.
by Colin Smith
Tue Mar 04, 2014 11:01 pm
Forum: OpenSim
Topic: CMC same excitation for multiple muscles
Replies: 3
Views: 490

CMC same excitation for multiple muscles

Is it possible to constrain multiple muscles to have the same excitation using the CMC tool? e.g. Force the solution to excite all three gluteus maximus lines of action with the same excitation profile?

Thanks,
Colin
by Colin Smith
Mon Dec 02, 2013 8:07 pm
Forum: OpenSim
Topic: Adjusting Neutral Joint Angle
Replies: 1
Views: 167

Adjusting Neutral Joint Angle

Hi all, I am developing lower extremity models from MRIs and I need to account for the fact that the joints were not scanned at exactly 0* according to the definitions I would like to use. Is there a simple way using OpenSim to adjust the 0* position of the joint? I have my joint reference systems d...
by Colin Smith
Mon Dec 02, 2013 7:48 pm
Forum: OpenSim
Topic: Wrapping Surfaces vs. Via Points for CMC and Forward Dynamic
Replies: 2
Views: 278

Re: Wrapping Surfaces vs. Via Points for CMC and Forward Dyn

James,

Thanks for your comments, they were very helpful. In my preliminary tests, I have found your thoughts on the speed of cylinders and spheres vs. ellipsoids to be right on.

Colin
by Colin Smith
Thu Nov 14, 2013 10:45 am
Forum: OpenSim
Topic: Wrapping Surfaces vs. Via Points for CMC and Forward Dynamic
Replies: 2
Views: 278

Wrapping Surfaces vs. Via Points for CMC and Forward Dynamic

Hello All, I am currently working on building subject-specific lower extremity models from MRIs for use in forward dynamic simulations. I am trying to decide whether to implement the muscle paths using only via points or with wrapping surfaces. Does anyone have experiences they can share with using ...