Detonation-driven fracture in thin shell structures: Numerical studies

Abstract

Combustion that follows a gas explosion quickly evolves into detonation and causes severe damage in thin-walled structures, especially structures that contain small internal flaws. Detonation-driven fracture of thin structures is studied numerically by a 3D meshfree method. Such scenarios are studied through numerical analysis and compared to experimental data.

On the role of stress waves in dynamic rupture of cylindrical tubes

“…In practice, the majority of the burst fractures of pressure vessels and pipes start from small flaws that usually initiate from the inner surface. Nevertheless, researchers carried out FE studies to simulate these experiments, mainly with the aim of validation of their numerical codes and procedures . On the other hand, the characterization of special markings that were found on the fracture surfaces of an exploded steel cylinder indicated that a significant portion of the crack propagation can be a cyclic growth by the detonation‐induced flexural waves .…”

“…On the other hand, the characterization of special markings that were found on the fracture surfaces of an exploded steel cylinder indicated that a significant portion of the crack propagation can be a cyclic growth by the detonation‐induced flexural waves . Unfortunately, the majority of the reported FE simulations of detonation‐driven fracture of cylindrical tubes lack the previously mentioned critical considerations …”