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Full Abstract: OpenSimTutorial gcmas2015.pdf
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Introduction to OpenSim and Workshop goals
Background
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Learning Objectives
OpenSim is open-source software that allows users to develop, analyze , and visualize models of the musculoskeletal system , and to generate dynamic simulations of movement walking and other movements (see Delp 2007). In OpenSim, a musculoskeletal model consists of rigid body segments connected by joints. Muscles span these joints and generate forces and movement. Once a musculoskeletal model is created, OpenSim OpenSim is highly relevant to the GCMAS Community because it enables users to study the effects of musculoskeletal geometry, joint kinematics, and muscle-tendon properties on the forces and joint moments that the muscles can produce. With OpenSim, our goal is to provide a framework that allows the biomechanics community to create, share, and extend a library of models and dynamic simulation tools.
Workshop Goals
This workshop will introduce users to some of the tools and models available with the OpenSim software package. In this workshop, you will:
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By this end of this tutorial, participants will be able to:
- Identify components of an OpenSim model (GUI & XML)
- Load a model and animate it
- Use OpenSim's Plot Tool to plot muscle moment arms and other data
- Use OpenSim's Scale and Inverse Kinematics Tools to scale a model and solve for the model's joint angles from marker data
- Analyze a model to explain how force-generating capacity changes after a simulated surgery
- List the steps needed to process experimental data for input into OpenSim
- Locate OpenSim documentation, examples, and resources
Preparing for the Tutorial
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Participants should bring (or be prepared to share with a colleague) a laptop running the Windows operating system with OpenSim and Notepad++ installed. Bring a computer mouse, too.
Before the tutorial:
(1) Please test your installation of OpenSim installations by completing the test exercise quick exercises posted below.
(2) Download the GCMAS tutorial files(coming soon).
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Download OpenSim
OpenSim is hosted on SimTK, a cloud storage service for biomedical tools and research. There are 32- and 64- bit versions available to correspond with your system requirements. If you are unsure which version you need, click here.
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Download OpenSim 3.2. |
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Download Notepad++
OpenSim model files and setup files are written in xml. Notepad++ is a free text editor that makes it easier to view and edit xml files. During the tutorial we will use Notepad++ to examine OpenSim files.
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Download Notepad++ |
How to Test Your Installation of OpenSim
Introduction to the Opensim GUI (PDF) gui_intro_draft.pdf
How to Download the GCMAS Tutorial Files (add zip tutorial folder)
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Download the Pre-Tutorial Test Exercises
Please download and complete the following exercises PRIOR to the tutorial. We've compiled these exercises to:
- Confirm that you've installed OpenSim correctly
- Introduce you to some useful features of OpenSim's GUI
- Help you configure Notepad++ to recognize OSIMM files as XML files
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Download Pre-Tutoral Test Exercises |
Download the GCMAS Tutorial Files
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Download Tutorial Files. |
Download Guided Tutorial Exercise (pdf)
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Download Guided Tutorial |
Download Tutorial Slides (pdf)
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Download tutorial slides |
Workshop Staff and Contact Information
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Allison Arnold (aarnold@oeb.harvard.edu) Concord Field Station, Harvard University
| Apoorva Rajagopal (apoorvar@stanford.edu) Neuromuscular Biomechanics Laboratory, Stanford University
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Chris Carty (c.carty@griffith.edu.au) School of Allied Health Sciences, Griffith University
| Ability & Innovation Lab, University of Washington  |
James Dunne (james.dunne@stanford.edu) Neuromuscular Biomechanics Laboratory, Stanford University
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Tutorial Slides
coming soon
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Here are some useful resources for learning more about OpenSim:
Useful Links and Literature
National Center for Simulation Research (NCSRR)
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OpenSim: Open-Source Software to Create and Analyze Dynamic Simulations of Movement
Scott L. Delp, Frank C. Anderson, Allison S. Arnold, Peter Loan, Ayman Habib, Chand T. John, Eran Guendelman, and Darryl G. Thelen
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, VOL. 54, NO. 11, NOVEMBER 2007
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