A UV Sphere Contact calculates contact forces between primitive sphere and UV surface. GUI provides node and rectangular 4-node patch which is discretized with UV data. Rectangular patches will be in uniform patch size and well-arranged. Target UV surface is a geometry which can be UV-parametrized. An opened UV surface has 4 edges and a closed UV surface has 2 edges. If smooth face contact option is activated, bi-cubic Hermite surface is generated and it provides smooth contact between surface and primitive sphere.
Figure 1 UVSph icon of Contact group in Professional tab