{"action":"opened","issue":{"url":"https://api.github.com/repos/tbeu/Modelica/issues/171","repository_url":"https://api.github.com/repos/tbeu/Modelica","labels_url":"https://api.github.com/repos/tbeu/Modelica/issues/171/labels{/name}","comments_url":"https://api.github.com/repos/tbeu/Modelica/issues/171/comments","events_url":"https://api.github.com/repos/tbeu/Modelica/issues/171/events","html_url":"https://github.com/tbeu/Modelica/issues/171","id":177047614,"number":171,"title":"Add planar four bar loop to MultiBody examples","user":{"login":"modelica-trac-importer","id":22202507,"avatar_url":"https://avatars.githubusercontent.com/u/22202507?v=3","gravatar_id":"","url":"https://api.github.com/users/modelica-trac-importer","html_url":"https://github.com/modelica-trac-importer","followers_url":"https://api.github.com/users/modelica-trac-importer/followers","following_url":"https://api.github.com/users/modelica-trac-importer/following{/other_user}","gists_url":"https://api.github.com/users/modelica-trac-importer/gists{/gist_id}","starred_url":"https://api.github.com/users/modelica-trac-importer/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/modelica-trac-importer/subscriptions","organizations_url":"https://api.github.com/users/modelica-trac-importer/orgs","repos_url":"https://api.github.com/users/modelica-trac-importer/repos","events_url":"https://api.github.com/users/modelica-trac-importer/events{/privacy}","received_events_url":"https://api.github.com/users/modelica-trac-importer/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":{"url":"https://api.github.com/repos/tbeu/Modelica/milestones/12","html_url":"https://github.com/tbeu/Modelica/milestones/MSL_next-MINOR-version","labels_url":"https://api.github.com/repos/tbeu/Modelica/milestones/12/labels","id":2004998,"number":12,"title":"MSL_next-MINOR-version","description":"Next ('''not yet specified''') minor version of the MSL which:\r\n * is backward compatible\r\n * does '''not''' require a conversion script ","creator":{"login":"modelica-trac-importer","id":22202507,"avatar_url":"https://avatars.githubusercontent.com/u/22202507?v=3","gravatar_id":"","url":"https://api.github.com/users/modelica-trac-importer","html_url":"https://github.com/modelica-trac-importer","followers_url":"https://api.github.com/users/modelica-trac-importer/followers","following_url":"https://api.github.com/users/modelica-trac-importer/following{/other_user}","gists_url":"https://api.github.com/users/modelica-trac-importer/gists{/gist_id}","starred_url":"https://api.github.com/users/modelica-trac-importer/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/modelica-trac-importer/subscriptions","organizations_url":"https://api.github.com/users/modelica-trac-importer/orgs","repos_url":"https://api.github.com/users/modelica-trac-importer/repos","events_url":"https://api.github.com/users/modelica-trac-importer/events{/privacy}","received_events_url":"https://api.github.com/users/modelica-trac-importer/received_events","type":"User","site_admin":false},"open_issues":35,"closed_issues":0,"state":"open","created_at":"2016-09-14T19:33:06Z","updated_at":"2016-09-14T23:18:59Z","due_on":null,"closed_at":null},"comments":0,"created_at":"2016-09-14T23:18:59Z","updated_at":"2016-09-14T23:18:59Z","closed_at":null,"body":"**Reported by anonymous on 5 Aug 2016 11:08 UTC**\nhttp://stackoverflow.com/q/38737691/6681847 showed that modeling a planar four bar loop with MultiBody caused some struggle. Checking the MultiBody loop examples I noticed that there is no simple model of a planar four bar loop demonstrating the necessity of MultiBody.Joints.RevolutePlanarLoopConstraint. (MultiBody.Examples.Loops.Utilities.Cylinder uses MultiBody.Joints.RevolutePlanarLoopConstraint but is not really of help here.)\r\n\r\ndietmarw's example model [Planar4Bar](http://stackoverflow.com/a/38767267/6681847) could serve as a start adding a new example model to the MSL MultiBody.\n\nMigrated-From: https://trac.modelica.org/Modelica/ticket/2039"}}
{"actor":{"display_login":"modelica-trac-importer"}}