Simulations of spherical tetrahedron shaped body for ball mill are made. The impact of spherical tetrahedron shaped body against a tip of fixed spherical tetrahedron was modeled via explicit Finite Element Method. Distributions of Strain and Stress and Force to time diagrams are obtained for three cases of impact. 1. Impact of spherical tetrahedron spherical surface against a tip of fixed spherical tetrahedron. 2. Impact of spherical tetrahedron tip against a tip of fixed spherical tetrahedron. 3. Impact of spherical tetrahedron edge against a tip of fixed spherical tetrahedron. Conclusions about the workability of the spherical tetrahedron shaped body are made. PACS: 45.50.Tn, 83.50.-v, 89.20.Bb