Abstract A device that controls rifle barrel vibration and improves bullet accuracy was evaluated and designed by computer simulation. A computer program was written by the authors to solve the transient form of the elastic beam vibration equation for any given driving function.
Output consists of binary files containing transverse velocity and displacement profiles.
FFT post-processing was performed to benchmark and verify the simulator with analytical solutions of mode shapes and frequencies. The simulator then was used to optimize a design for a set of rifle barrel modifications that alter the vibrational response to minimize the angular dispersion, or slope, at the muzzle. Rifle accuracy is thereby improved for a wide range of loads for a given rifle. Introduction Barrel vibration is one of the factors affecting the accuracy of rifles. These variations cause the bullet to impact in different locations around the point of aim.