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  • 标题:Developing Force Models for Full Body Contact andSoft Tire-Solid Ground Interaction
  • 本地全文:下载
  • 作者:Adam Ryason
  • 期刊名称:Caltech Undergraduate Research Journal
  • 出版年度:2015
  • 卷号:15
  • 期号:1
  • 页码:37
  • 出版社:Caltech Undergraduate Research Journal
  • 摘要:This research develops force contact models to beimplemented and used in real-time dynamicsimulations. There currently exists a need for fullbody contact modeling and soft tire on solid groundinteraction. The Collision Forces model enablesrigid bodies to interact with external objects bycreating collision constraints between intersectingbodies and by using a penalty method that involvesapplying a spring-damper force based on thepenetration distance. The Tyre Collision modelsimulates vehicle applied forces using the PacejkaMagic Formula, creating soft tire on solid groundinteractions, which is favorable for High-MobilityMultipurpose Wheeled Vehicle (HMMWV). TheTyre Collision applies longitudinal and lateral forcesbased on the vertical load, camber angle, and slipangle while avoiding divergence at low velocities.The contact models are applied to a bipedal robotand rover vehicles assembly for testing. Variousregression tests are performed and a GUI was usedto ensure that the simulations respond naturallyand results are compared to known methods.
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