{"id":191013,"date":"2021-09-07T22:29:11","date_gmt":"2021-09-07T22:29:11","guid":{"rendered":"\/forum\/forums\/reply\/191013\/"},"modified":"2021-09-07T22:39:40","modified_gmt":"2021-09-07T22:39:40","slug":"191013","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/191013\/","title":{"rendered":"Reply To: Cardiovascular Stent – Lesson 9 Trouble"},"content":{"rendered":"

You need a Kinematic Mount. There are many forms. The simplest form is called 3-2-1 and uses three non-collinear vertices. Pick one vertex and hold it with 3 constraints: X,Y,Z = 0. Pick a second vertex, some distance along X from the first point and hold it with 2 constraints: Y,Z = 0. Pick a third vertex, some distance in Y from the first point and hold it with 1 constraint: Z = 0. All expansion will be relative to the first point.
\nAnother form of Kinematic Mount uses three vertices around a circle and requires a cylindrical coordinate system. The three vertices all have Theta and Z = 0 and Radial is Free. That is exactly six constraints, same as the 3-2-1 but all expansion is relative to the center of the circle. That would be nice for a stent which is a cylindrical object, but either one will allow free expansion of the metal stent with a pressure applied to the inner surface.<\/p>\n","protected":false},"template":"","class_list":["post-191013","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t