Search found 42 matches
- Tue Apr 21, 2020 3:48 am
- Forum: OpenSim
- Topic: CMC vs Static Optimization
- Replies: 0
- Views: 113
CMC vs Static Optimization
Hello all, I have just a simple question. I am getting results of arm flexion using both CMC and Static Optimization. And the results are quite different. There is an appreciable difference in muscle activity in both the methods. Which one is more reliable? Which results should I take to be more acc...
- Wed Apr 15, 2020 11:15 pm
- Forum: OpenSim
- Topic: Changing torque actuator excitation in every loop of Static Optimization
- Replies: 3
- Views: 354
Changing torque actuator excitation in every loop of Static Optimization
Hello, I am trying static optimization for arm flexion of arm26 model in matlab. The procedure through which static optimization goes through is that it first calculates the joint moment at the joint based on the motion file. Then, it does muscle force calculation based on that. Is it possible that ...
- Sun Mar 01, 2020 11:10 am
- Forum: OpenSim
- Topic: Using the Time Stepper to get state values after each iteration
- Replies: 1
- Views: 119
Using the Time Stepper to get state values after each iteration
Hi all, I am working on using the Integrator of OpenSim API. While I run the following command, manager.integrate(1) ; It means that the underlying equations are being solved multiple times until 1 second time duration is reached. During that time duration, equations are solved and state values are ...
- Fri Jan 31, 2020 3:50 am
- Forum: OpenSim
- Topic: OpenSim-Simulink interfacing possibility
- Replies: 1
- Views: 147
OpenSim-Simulink interfacing possibility
Hello, I am working on interfacing OpenSim with matlab. Currently, I am able to do my work in matlab using scripts in which I import the Opensim library and the required model. But I want to shift the whole thing on Simulink, so that I may be able to interface SimMechanics too. Is there any possibil...
- Thu Jan 30, 2020 3:22 am
- Forum: OpenSim
- Topic: Getting elbow moment, given muscle activation
- Replies: 0
- Views: 70
Getting elbow moment, given muscle activation
Hello, I need help to use MuscleAnalysis to get elbow moment due to biceps and triceps muscle. I am giving some activation to the biceps muscle set in each loop, and getting the elbow joint position (integration time set to 0.8). How will I be able to get instantaneous joint moment at elbow joint, j...
- Thu Jan 30, 2020 3:06 am
- Forum: OpenSim
- Topic: Stage realization not working- Calculating reaction force on parent body in a pin joint
- Replies: 2
- Views: 228
Re: Stage realization not working- Calculating reaction force on parent body in a pin joint
Thanks Dimitar for your reply. In the given python example, they have run the integrator once, and obtained all the data from the state generated. But in my case, I have to run the integrator for a small time in every loop and get the force data every time, and based on that update control signals g...
- Mon Jan 27, 2020 1:16 am
- Forum: OpenSim
- Topic: Stage realization not working- Calculating reaction force on parent body in a pin joint
- Replies: 2
- Views: 228
Stage realization not working- Calculating reaction force on parent body in a pin joint
Hello, I am trying to run a simple pendulum and calculate reaction forces on ground. I have made a ball of given radius and an arm length of 2.5 and oscillating it directly with respect to ground, under the influence of gravity only. I have run the simulation in a loop, and set the integration time....
- Fri Jan 24, 2020 9:35 pm
- Forum: OpenSim
- Topic: Method for giving control signal to path actuator
- Replies: 5
- Views: 655
Re: Method for giving control signal to path actuator
Thanks, that worked. I understood what I was doing wrong.
- Fri Jan 24, 2020 8:45 am
- Forum: OpenSim
- Topic: Method for giving control signal to path actuator
- Replies: 5
- Views: 655
Re: Method for giving control signal to path actuator
Hello Thomas Uchida, Thanks for your kind attention and reply. In the simple example code, muscle has been controlled but what I want to control here is the PathActuator, which basically creates tension based on the value of it's OptimalForce and the control signal applied to it. I tried giving cont...
- Fri Jan 24, 2020 5:19 am
- Forum: OpenSim
- Topic: ContactMesh not working with input stl file from solidworks.
- Replies: 2
- Views: 457
Re: ContactMesh not working with input stl file from solidworks.
Thankyou for your kind attention Ayman Habib.
From now on, I'll be using MeshLab for model import, for avoiding any issue related to mesh. My current problem was solved by using ElasticFoundationForce instead of HuntCrossleyForce.
Thanks
From now on, I'll be using MeshLab for model import, for avoiding any issue related to mesh. My current problem was solved by using ElasticFoundationForce instead of HuntCrossleyForce.
Thanks