A Numerical Study of 3D Dynamics and Strength of Metal-Composite Cylinders Under Internal Explosion Loading

The 3D dynamics and strength of metal-composite finite-length cylinders under nonaxisymmetric internal explosion loading have been studied by a numerical-analytical method. The strength verification has been performed using three fracture criteria for a transtropic material: the maximum-stress criterion, the maximum-strain criterion, and the generalized Mises criterion. The influence of the explosive charge shift along the radius and axis with respect to the shell’s center of symmetry on the stress-strain state and strength of the cylinder has been investigated. The reinforced composites with low ultimate tensile strengths perpendicular to the reinforcement fibers have been found ineffective for such shells.