12 December 2019
- Last edited 12 December 2019
1) Now I recall that Split seemed difficult to use, but you seem to have figured something out as long as you got a vertex on the surface. What I actually did was simpler. I clicked on the Sketch tool and picked the disk surface to sketch on. Then I drew a circle and two lines. Leave the sketch and return to 3D mode. The lines and circle have divided the surface into three faces.
2) After the midsurface operation, there is a half wall thickness gap between the shaft and the disk. Click on the Pull tool, click on the inside edge of the disk, click on the arrow pointing to the center then type U or click on the Up To button then click on the shaft surface. That will close the gap. However, if you just mesh that, the disk and shaft are not connected. You go to the Workbench tab and click the Share button, then a purple circle at the intersection shows that the mesh will be connected, and no Contact needs to be used in Mechanical.
3) In Mechanical, if you click on the sphere body, the mass of the sphere is shown in the Details window under Properties. Write that down if you want to use that exact value (or maybe you know the mass you want to use without reference to the sphere body). I assume you know the coordinates of the center of the sphere. Suppress the sphere body.
Right mouse click on Geometry and Insert Point Mass. For Scoping, click on the vertex on the disk. The coordinates of that point will be copied into the Details window. Edit the Y coordinate to move the Point Mass off the surface of the disk. Type in the Mass. That will create the image you see in my post.