Search found 8 matches

by Antonio Parziale
Tue Feb 26, 2019 3:45 pm
Forum: OpenSim
Topic: Muscles contraction without their activation
Replies: 10
Views: 1140

Re: Muscles contraction without their activation

I ran a 0.5-second simulation and then used the Analyze Tool to run a MuscleAnalysis. The passive forces are large. Dear Dr. Uchida, We apologise for the inconvenient. We were using in the wrong way the Plot tool offered by OpenSim. So, it seems the passive forces shown by Giuseppe in his first thr...
by Antonio Parziale
Sun Feb 24, 2019 9:48 am
Forum: OpenSim
Topic: Muscles contraction without their activation
Replies: 10
Views: 1140

Re: Muscles contraction without their activation

I loaded the model you provided in your first post but received "Object type Millard12EqMuscleWithAfferents not recognized" errors so I was unable to reproduce the issue to investigate. However, I loaded the arm26 model that accompanies the 4.0 installation and confirmed that no active muscle force...
by Antonio Parziale
Tue Dec 04, 2018 11:32 am
Forum: OpenSim
Topic: Unstable musculoskeletal model, what to do?
Replies: 0
Views: 186

Unstable musculoskeletal model, what to do?

Dear all, We want to use a simplified version of the "Upper Limb Dynamic Model", where only 6 Millard's muscles are considered (Pectoral Major, Deltoid, Brachialis, Bicpes short, Triceps Long, Triceps Lateral). We are interested in elbow flexion/extension and shoulder horizontal adduction/abduction ...
by Antonio Parziale
Thu Nov 08, 2018 9:22 am
Forum: OpenSim
Topic: Analyze Tool in Matlab: How to plot
Replies: 3
Views: 486

Analyze Tool in Matlab: How to plot

Dear all, I'm using the model arm26.osim and I want to plot the passive fiber force versus the r_elbow_flex. I was able to plot the function by using "Analyze Tool" available in the OpenSim GUI: 1)By Loading a motion file where time varies between 0 sec and 2 sec, r_shoulder_el is always 0 and r_elb...
by Antonio Parziale
Thu Oct 11, 2018 8:48 am
Forum: OpenSim
Topic: How to add and compile a new Muscle
Replies: 3
Views: 341

Re: How to add and compile a new Muscle

I think the answer is "to create a plugin" :oops:
by Antonio Parziale
Thu Oct 11, 2018 8:40 am
Forum: OpenSim
Topic: How to add and compile a new Muscle
Replies: 3
Views: 341

Re: How to add and compile a new Muscle

Dear James, thank you for your response. Unfortunately, my question was not clear. My problem is the following: I developed a new Muscle Model by extending the standard Millard Model and I want to use it in one of the musculoskeletal model available on simtk. If I want to import an osim model in C++...
by Antonio Parziale
Wed Oct 10, 2018 8:02 am
Forum: OpenSim
Topic: How to add and compile a new Muscle
Replies: 3
Views: 341

How to add and compile a new Muscle

Dear all, We are interested in creating a new muscle model and using it in some of upper-arm musculoskeletal models available on simtk. In particular, we have downloaded the Muscle class available on https://simtk.org/projects/afferents, which extends the default Millard model, and we want to use th...
by Antonio Parziale
Tue Feb 04, 2014 9:37 am
Forum: OpenSim
Topic: Your opinion on OpenSim
Replies: 1
Views: 727

Your opinion on OpenSim

Dear all, these are my first step in the fields of software tool for musculoskeletal modeling. I need to use them for modeling and simulating an upper limb and its "control stage" in an handwriting generation task. I read an article in whitch the author wrote: OpenSim shares many of the features and...