Influence of Ball Bearing Size on the Flight and Damage Characteristics of Blast-Driven Ball Bearings

This paper presents insights into the influence of ball size on flight characteristics and damage a bearing embedded in rear detonated cylindrical charge. It includes results from post-test analysis bearings previously reported experiments. Computational simulations using Ansys Autodyn were used to provide extra information about velocity variation during sustained by blast event. The (diameter mass) was investigated validated simulation models extend dataset beyond initial experimental work. peak is influenced charge mass ratio aspect Larger require momentum accelerate them higher velocities, but their surface area means greater portion explosive involved transferring kinetic energy projectile. Tensile spalling be major mechanism within bearings. also hydrostatic pressure propagation itself, affecting location degree internal cracking These findings will prove valuable protection engineers considering effects projectiles improvised devices.