*Join the OpenSim Workshop at CMBBE in Montreal on September 3* *Title: OpenSim for Muscle-Driven Multibody Dynamics and Control: Overview and Hands On Example* Ian Stavness, Matt DeMers, and James Dunne are leading a workshop at the International Symposium on Computer Methods in Biomechanics and Biomedical Engineering (CMBBE) in Montreal, Canada. The hands-on workshop will show users how to perform forward dynamic simulations of movement that include contact modeling and muscle stretch reflexes. Learn more about the event and find out how to register. <http://web.stanford.edu/group/opensim/support/event_details.html?id=133> *OpenSim featured in the NIH Director's blog* Our video, “OpenSim: Improving Treatments for Movement Disorders through Computer Simulations," was recently featured on the blog of NIH Director Francis Collins. Watch the video. <http://directorsblog.nih.gov/2015/07/30/cool-videos-better-computation-better-hope-for-movement-disorders/> *Emel Demircan, Matt Millard, and Kate Saul become newest OpenSim Fellows* We are pleased to announce our newest OpenSim Fellows: Emel Demircan, Matt Millard, and Kate Saul. This honor from the National Center for Simulation in Rehabilitation Research (NCSRR) recognizes a strong commitment to the OpenSim community and a deep expertise in biomechanical modeling and simulation. Read more about the current fellows <http://simtk-confluence.stanford.edu:8080/display/OpenSim/OpenSim+Fellows> and learn how to apply <http://web.stanford.edu/group/opensim/support/fellows.html>. *Download our newest software release, OpenSim 3.3* OpenSim 3.3 was released last month and is available for download <https://simtk.org/project/xml/downloads.xml?group_id=91>. The release includes new examples and scripts that make it even easier for you to get started and help you evaluate the quality of your simulations. Based on your feedback, we have also enhanced OpenSim to automate more of your workflow. Our website includes a full list of new features and upgrade notes <http://simtk-confluence.stanford.edu:8080/pages/viewpage.action?pageId=12222533> . *OpenSim community makes an impact at ISB * OpenSim was featured in over 50 abstracts at the XXV Congress of the International Society of Biomechanics (ISB) in Glasgow, Scotland in July. Topics ranged from analyzing exoskeletons and prostheses to optimization techniques for muscle-driven simulation to sports performance. OpenSim Fellow Katherine Steele was also awarded the David Winter Young Investigator Award. If you missed the event, we plan to feature several speakers in our upcoming webinars. See a full list of abstracts here <http://simtk-confluence.stanford.edu:8080/display/OpenSim/OpenSim+Featured+in+Talks+at+ISB+2015> . *OpenSim gets high marks as a multibody system simulator* A recent study from Monica Reggiani’s group at the University of Padua demonstrates that OpenSim <http://opensim.stanford.edu/> and Simbody <https://simtk.org/home/simbody>, its multibody dynamics engine, generate highly accurate simulations of mechanical systems. OpenSim was evaluated using the Multi-Body System (MBS) Benchmark, which consists of five systems ranging from a simple pendulum to an over-constrained system of five rods and six rotational joints (Bricard’s mechanism). This work was presented at the 2015 European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS) Thematic Conference on Multibody Dynamics (see page 1572 of the Proceedings <http://www.multibody2015.org/frontal/img/Ebook_Multibody_2015.pdf>). You can learn more and download the code that implements the benchmarks in OpenSim at https://simtk.org/home/mbs_bos. *Help test the new version of Simtk.org* We’ve spent the past year overhauling Simtk.org to bring you a modern-looking site with a more streamlined workflow. We are looking for beta testers to help us test the new site and provide feedback. Sign up for our beta-testing mailing list <https://simtk.org/mailman/listinfo/website-betatesters> to help out and to get a sneak peek of the new site. -- *Jennifer Hicks, Ph.D.* Director of Data Science | Mobilize Center <http://mobilize.stanford.edu> Associate Director | NCSRR <http://www.stanford.edu/group/opensim/about/index.html> R&D Manager | OpenSim <http://opensim.stanford.edu/> Stanford University 650-498-4403 | jenhicks@stanford.edu