Author(s)

C.C. Chao, R.B. Hong & T. Wang

Abstract

The three-dimensional dynamic response of a solid propellant rocket motor sub- jected to projectile or fragment impact is modelled on a viscoelastic basis with complex modulus. The propellant is in a form of thick hollow cylinder housed in an elastic metal casing simply supported at both ends. The three-dimensional consistent higher-order theory is employed in that 3-D boundary conditions and interface continuity of transverse stresses are emphasized on the exterior and in- terior. Dynamic displacement fields are assumed as a combination of Legendre polynomials and double Fourier series in cylindrical coordinates. Upon impact by a high velocity projectile or fragment, hot spots are found theoretically for the highest pressure and temperature via the thre

Keywords