WHEN THE GAME OF GOLF BECOMES A NUISANCE

Golf is a popular outdoor sport played in many countries across the world. However, the fact it involves hitting a hard ball considerable distances can create problems if the balls are mishit and stray from the course. When it does, there can be a potential claim in nuisance, with the golf club itself being liable once it becomes aware of the nuisance. Often it is an injunction to prevent the continuation of the nuisance that is sought by the plaintiff, though damages can, and have, been awarded. If there is a problem with balls being mishit off the course, the golf club is required to remedy the situation by putting up barriers, or redesigning the course by, for example, shortening the holes in the area where there is a problem.

SIMULATY OF VOLUME STRESS-DEFORMED STATE IN A REINFORCED TITANIUM-ALUMINUM COMPOSITE WHEN DETERMINING THE HARDNESS BY BRINELL

The effect of the diametrs and arrangement of titanium fibers in a fibrous composite with an aluminum matrix on the change in the stress-strain state upon indentation of a rigid spherical indenter by the Brinell method has been studied. The process of introducing a hard ball Ø 5 mm under a load of 1226 N was simulated in the SIMULIA / Abaqus software package. The distribution of plastic deformation in the cells near the surface of the deformed plate in the axial section has two maxima and almost zero near the center of the hole. The print becomes elliptical when the indenter is positioned over the axis of the titanium wire. The major axis of the ellipse is perpendicular to the axes of the wires. This is due to the restraint of aluminum deformation in this direction by titanium fibers.

Examples of exponentially many collisions in a hard ball system

Consider the system of n identical hard balls in ${\mathbb {R}}^3$ moving freely and colliding elastically. We show that there exist initial conditions such that the number of collisions is exponential in n.