nI modified your model to attempt to do just one thing: rotate the workpiece. In order to get a mesh that would solve quickly, I put a hole in the workpiece. nI assigned an Angular Velocity in the Initial Conditions of 36.7 rad/s which is about 350 rpm.nUsing the Cylindrical Coordinate System, I assigned a 1800 degree rotation about Z by using the Y coordinate of the cylindrical coordinates to be spread over 0.856 s which is a speed of 350 rpm and in that time it will make 5 revolutions.nEven though it doesn't seem like a great accomplishment to rotate a tube, look at the link below to find out that two other methods of doing this simple task fail completely!nwill be glad to know this works.