Accession Number:

ADP012457

Title:

Propagation of Longitudinal Waves in a Gun Barrel

Descriptive Note:

Corporate Author:

GIAT INDUSTRIES BOURGES (FRANCE)

Report Date:

2001-04-26

Pagination or Media Count:

12.0

Abstract:

Very high stresses could occur in long gun barrel wall during firing. The stresses induced are due to the propagation of axisymmetric longitudinal waves along the barrel. To study this propagation, the tube was modelled using medium thickness shell elements. The equations of motion thus obtained were discretised using the centred finite difference method and resolved explicitly using a specifically designed computer programme. The latter outputs the displacements and stresses for all nodal points in the barrel, at any time during the firing cycle. Validation against experimental results gave very good agreement. A parametric study was then constructed to evaluate the influence of certain parameters. Finally, the limits of the model were studied. The study was completed by comparison with finite element modelling.

Subject Categories:

  • Guns
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE