UF_Lecture_2_OpenSim_Overview

UF_Lecture_2_OpenSim_Overview - Lecture 2 OpenSim Overview...

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Unformatted text preview: Lecture 2 OpenSim Overview EML 5595 Mechanics of the Human Locomotor System Outline OpenSim Overview Delp et al. (2007) (2007) OpenSim Tutorial 1 Problems with Current Paradigm Difficult to construct, modify, and utilize musculoskeletal models Difficult to develop advanced biomechanical analyses Difficult to reproduce results of simulation papers Commercial codes valuable but not extensible Cost of commercial codes limits use in teaching Building your o n soft are is a challenge B ilding o r own software Difficult to bring your innovations to the world Continuity is lost when students graduate Delp et al. (2008) OpenSim Workshop NACOB OpenSim Overview OpenSim Overview 1. Why is OpenSim a useful tool? OpenSim Utility Delp et al. (2008) OpenSim Workshop NACOB OpenSim Overview 1. Why is OpenSim a useful tool? 2. What benefits does OpenSim provide? OpenSim Benefits Open access - results can be reproduced Extensible - you can add your own f t E t ibl dd features Widely available - bring your innovations to the world Free - teaching materials Access - a community of experts Continuity - for your lab Delp et al. (2008) OpenSim Workshop NACOB OpenSim Overview 1. Why is OpenSim a useful tool? 2. What benefits does OpenSim provide? 3. What features does OpenSim provide? OpenSim Features Standard format for exchanging models General purpose inverse dynamics Optimization to estimate muscle and joint forces Methods to create simulations from motion data Tools to analyze simulations Simbody: p Simbody: open source dynamics engine y y g Software, models, and simulations you contribute Delp et al. (2008) OpenSim Workshop NACOB OpenSim Overview 1. 2. 3. 4. 4 Why is OpenSim a useful tool? What benefits does OpenSim provide? What features does OpenSim provide? How i th O H is the OpenSim software structured? Si ft t t d? OpenSim Structure Delp et al. (2007) OpenSim Overview 1. 2. 3. 4. 4 5. Why is OpenSim a useful tool? What benefits does OpenSim provide? What features does OpenSim provide? How i th O H is the OpenSim software structured? Si ft t t d? How does the OpenSim user interface work? Software Interface Delp et al. (2007) OpenSim Overview 1. 2. 3. 4. 4 5. 6. 6 Why is OpenSim a useful tool? What benefits does OpenSim provide? What features does OpenSim provide? How i th O H is the OpenSim software structured? Si ft t t d? How does the OpenSim user interface work? How are OpenSim models created? OpenSim Model OpenSim Overview 1. 2. 3. 4. 4 5. 6. 6 7. Why is OpenSim a useful tool? What benefits does OpenSim provide? What features does OpenSim provide? How i th O H is the OpenSim software structured? Si ft t t d? How does the OpenSim user interface work? How are OpenSim models created? What is the OpenSim analysis workflow? OpenSim Workflow Delp et al. (2007) Inverse Kinematics Delp et al. (2007) Residual Reduction and Delp et al. (2007) Default Muscle Default Muscle Activation Dynamics y Musculotendon Contraction Dynamics OpenSim Case Study Delp et al. (2007) OpenSim Case Study Delp et al. (2007) OpenSim Tutorial 1 Introduction to Musculoskeletal Modeling Become familiar with OpenSim's graphical user interface (GUI) hi l i t f Discover some limitations of musculoskeletal models Explore differences between "1-joint" "1(uni-articular) and "2-joint" (bi-articular) uni-articular) "2(bi-articular) muscles Use OpenSim to address an important clinical problem For Next Time Finish working through OpenSim Tutorial 1 Download and start working through OpenSim Tutorial 2 Download and install Notepad++ for editing OpenSim files (http://notepad-plus-plus.org/) (http://notepad-plus-plus.org/) Download and read Zajac (1993) J Biomechanics 26 Suppl 1: 109-124 109- ...
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