Search found 12 matches

by Chunxia Li
Wed May 30, 2012 7:20 am
Forum: OpenSim
Topic: the ground reaction force format
Replies: 8
Views: 2405

Re: the ground reaction force format

Hi Ayman,

You mean I can add as many columns as I want to add? That would be awesome......

Chunxia
by Chunxia Li
Tue May 29, 2012 11:58 am
Forum: OpenSim
Topic: the ground reaction force format
Replies: 8
Views: 2405

Re: the ground reaction force format

Hello Ayman, Thank you so much. I think I understand your point. What if I want to have external load for both feet and both hands. In this case, ground_force_vx, ground_force_vy, ground_force_vz, and l_ground_force_vx, l_ground_force_vy, l_ground_force_vx are not enough. Because they can only be us...
by Chunxia Li
Tue May 29, 2012 8:29 am
Forum: OpenSim
Topic: the ground reaction force format
Replies: 8
Views: 2405

Re: the ground reaction force format

Thank you so much. In this case, the ground reaction force only considers feet force. How about the hands' force?
by Chunxia Li
Mon Mar 26, 2012 7:17 pm
Forum: OpenSim
Topic: the ground reaction force format
Replies: 8
Views: 2405

the ground reaction force format

In the ground reaction force file, the format looks like this: nColumns=19 inDegrees=yes endheader time ground_force_vx ground_force_vy ground_force_vz ground_force_px ground_force_py ground_force_pz 1_ground_force_vx 1_ground_force_vy 1_ground_force_vz 1_ground_force_px 1_ground_force_py 1_ground_f...
by Chunxia Li
Sun Mar 18, 2012 7:44 am
Forum: OpenSim
Topic: OpenSim model for inverse dynamics analysis
Replies: 4
Views: 300

Re: OpenSim model for inverse dynamics analysis

Hi Ayman, Is the following specifying mass properties? <Body name="pelvis"> <mass> 7.93070000 </mass> <mass_center> -0.07000000 -0.00880000 0.00000000 </mass_center> <inertia_xx> 0.06530000 </inertia_xx> <inertia_yy> 0.05950000 </inertia_yy> <inertia_zz> 0.05250000 </inertia_zz> <inertia_xy> 0.00000...
by Chunxia Li
Sat Mar 17, 2012 2:09 pm
Forum: OpenSim
Topic: Invese dynamic crash
Replies: 4
Views: 274

Re: Invese dynamic crash

Hi,

I came across another crash when setting up the external loads. Never experience this crash before.

Chunxia
by Chunxia Li
Sat Mar 17, 2012 2:07 pm
Forum: OpenSim
Topic: Invese dynamic crash
Replies: 4
Views: 274

Re: Invese dynamic crash

Hi Ayman,

Can I just send my model, motion file and fake force file to you?


Chunxia
by Chunxia Li
Sat Mar 17, 2012 1:57 pm
Forum: OpenSim
Topic: Invese dynamic crash
Replies: 4
Views: 274

Re: Invese dynamic crash

Hi Ayman, Thank you for your reply. In the sample file: Leg6of9Musc. In this example, after the IK process, they then synchronize the ik trile (motion data) and the force data, and then set up something such as motion setting and external loads, kinematics for external loads, create and edit externa...
by Chunxia Li
Sat Mar 17, 2012 1:26 pm
Forum: OpenSim
Topic: OpenSim model for inverse dynamics analysis
Replies: 4
Views: 300

Re: OpenSim model for inverse dynamics analysis

Hi, Ayman,

Thank you. But how to define mass properties?

Chunxia
by Chunxia Li
Tue Mar 13, 2012 8:26 am
Forum: OpenSim
Topic: OpenSim model for inverse dynamics analysis
Replies: 4
Views: 300

OpenSim model for inverse dynamics analysis

Hi everyone,

I want to do inverse dynamic analysis in OpenSim. In the OpenSim, I have no muscle for the skeleton model. Is this ok?

Chunxia