05 November 2018
- Last edited 05 November 2018
What was the source of that spreadsheet? It looks like it is the deformed nodal coordinates of a structural FEA model. The problem is that it is all the points, including the points inside the thickness, and not just the surface nodes, which is what you would want. Do you have access to that structural FEA model? If you also had the element data with the nodes, that would represent the mesh and you would be much more successful importing the mesh than just the nodes.
You could create an undeformed tyre (tire for my friends in the USA) by using a very few points in that file. Take the one point at the center and the few points at X=0 and Z>0. In the first image in my post above, you can see that there are three elements through the thickness, or four rows of nodes. You need to delete all the interior nodes, leaving just the outer and inner surface nodes. Unfortunately, there is no easy way to put those nodes in the correct "connect-the-dots" order to draw a curve through them, but you could import the points, then create the curve by manually connecting the points. That will give you a closed curve of the tyre cross-section. If the points look symmetric, you could just draw half then use a mirror function. That closed curve can be rotated around the center point to form a solid model of an undeformed tyre.