{"id":46,"date":"2014-06-18T09:39:10","date_gmt":"2014-06-18T17:39:10","guid":{"rendered":"http:\/\/research.engineering.ucdavis.edu\/biosport\/?page_id=46"},"modified":"2014-06-18T09:39:54","modified_gmt":"2014-06-18T17:39:54","slug":"luge-and-bobsled-ice-track-safety","status":"publish","type":"page","link":"https:\/\/research.engineering.ucdavis.edu\/biosport\/sample-page\/test-page-1\/luge-and-bobsled-ice-track-safety\/","title":{"rendered":"Luge and Bobsled Ice Track Safety"},"content":{"rendered":"<h2><a href=\"http:\/\/research.engineering.ucdavis.edu\/biosport\/wp-content\/uploads\/sites\/24\/2014\/06\/LugeTrack.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-47 alignleft\" alt=\"LugeTrack\" src=\"http:\/\/research.engineering.ucdavis.edu\/biosport\/wp-content\/uploads\/sites\/24\/2014\/06\/LugeTrack-138x300.png\" width=\"138\" height=\"300\" srcset=\"https:\/\/research.engineering.ucdavis.edu\/biosport\/wp-content\/uploads\/sites\/24\/2014\/06\/LugeTrack-138x300.png 138w, https:\/\/research.engineering.ucdavis.edu\/biosport\/wp-content\/uploads\/sites\/24\/2014\/06\/LugeTrack-69x150.png 69w, https:\/\/research.engineering.ucdavis.edu\/biosport\/wp-content\/uploads\/sites\/24\/2014\/06\/LugeTrack.png 422w\" sizes=\"auto, (max-width: 138px) 100vw, 138px\" \/><\/a>Project Summary<\/h2>\n<p>Previous Sports Biomechanics Laboratory projects included the creation of a virtual reality bobsled-driver training simulator. It was based on dynamic model of the motion of a particle or rigid-body model for the sled on the surface of ice tracks. The simulator allowed realistic interaction of a driver with the virtual sled including steering actions of the driver, cockpit motion to mimic that occurring on an actual run, computer generated animations of the oncoming track, and realistic steering\u00a0<\/p>\n<p>forces transmitted to the hands through a model of the ice-runner interaction. This simulator made it possible for neophyte drivers to increase their skill, and experienced drivers to enhance their technique with nearly instant feedback on what works and what doesn\u2019t, without the expense of travelling to the actual track halfway around the world.<\/p>\n<p>Similar simple geometric models of ice surface shapes and equations of motion of objects on these surfaces can also be used to explain ejection of sliders from ice tracks. Simulations\u00a0employing these explain why certain track design features can be\u00a0viewed as proximate causes of ejection from the track and\u00a0hence design flaws. The paper below studies the interaction of a\u00a0particle model for the luge sled (or its right runner) with the\u00a0ice fillet commonly connecting inside vertical walls in turns\u00a0to the flat track bottom. A numerical example analyzes the\u00a02010 luge accident at the Vancouver Olympics. It shows that\u00a0this runner-fillet interaction, and specifically the fillet\u2019s\u00a0positive curvature up the inside wall, can cause a vertical\u00a0velocity more than sufficient to clear the outside exit wall. In\u00a0addition the negative curvature of the fillet along the track\u00a0and the large vertical velocity, explain loss of fillet or wall\u00a0contact and slider ejection. This exposes the fillet along\u00a0inside walls as a track design flaw.<\/p>\n<p><a title=\"Luge Safety Paper\" href=\"http:\/\/biosport.ucdavis.edu\/research-projects\/luge_track_safety\/luge_track_safety.pdf\">Luge Track Safety Paper<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Project Summary Previous Sports Biomechanics Laboratory projects included the creation of a virtual reality bobsled-driver training simulator. It was based on dynamic model of the motion of a particle or rigid-body model for the sled on the surface of ice tracks. The simulator allowed realistic interaction of a driver with \u2026 <a class=\"continue-reading-link\" href=\"https:\/\/research.engineering.ucdavis.edu\/biosport\/sample-page\/test-page-1\/luge-and-bobsled-ice-track-safety\/\"> Continue reading <span class=\"meta-nav\">&rarr; <\/span><\/a><\/p>\n","protected":false},"author":10,"featured_media":0,"parent":13,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-46","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/research.engineering.ucdavis.edu\/biosport\/wp-json\/wp\/v2\/pages\/46","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/research.engineering.ucdavis.edu\/biosport\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/research.engineering.ucdavis.edu\/biosport\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/research.engineering.ucdavis.edu\/biosport\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/research.engineering.ucdavis.edu\/biosport\/wp-json\/wp\/v2\/comments?post=46"}],"version-history":[{"count":1,"href":"https:\/\/research.engineering.ucdavis.edu\/biosport\/wp-json\/wp\/v2\/pages\/46\/revisions"}],"predecessor-version":[{"id":48,"href":"https:\/\/research.engineering.ucdavis.edu\/biosport\/wp-json\/wp\/v2\/pages\/46\/revisions\/48"}],"up":[{"embeddable":true,"href":"https:\/\/research.engineering.ucdavis.edu\/biosport\/wp-json\/wp\/v2\/pages\/13"}],"wp:attachment":[{"href":"https:\/\/research.engineering.ucdavis.edu\/biosport\/wp-json\/wp\/v2\/media?parent=46"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}