The response of circular composite plates to underwater blast: Experiments and modelling

Abstract

We present a new experimental technique to allow laboratory-scale observation of underwater blast loading on circular plates, including dynamic deformation and failure of the plates as

Dynamic failure of honeycomb-core sandwich structures subjected to underwater impulsive loads

“…Schiffer [15,28,29] studied the response of fluid with different contact types at the fluid-structure interface. Focused on the overall structural response, damage and energy, Zhou [30] studied on the honeycomb sandwich structures subjected to water-based loadings in air-backed and water-backed condition numerically.…”

“…According to Taylor's analysis [33] of one-dimensional underwater blast waves for a plane wave impacting on a sliding plate, the impulse in the fluid follows the Parameter analysis dictates that the problem under investigation is governed by the following set of independent non-dimensional parameters [29,35], , ,…”

Analytical Models for the Response of the Double-Bottom Structure to Underwater Explosion Based on the Wave Motion Theory

“…By solving (23) and checking if the conditions in (19) are satisfied, we can obtain wave trains traveling away from the cavitation region cf,+ and update the current position of closing front cf . The value of cf,+ is used to generate a wave train which will act on the plate at…”

“…They focused on the cavitation phenomena in the fluid, including propagation and arrest of breaking fronts and closing fronts. Later on, the structure response and the cavitation process subsequent to underwater blast were experimentally investigated [17][18][19]. It was found that the breaking front approaching the structure may invert its direction before reaching the fluid-structure interface and the behavior of water cavitation strongly influenced the pressure histories of the structure.…”

Near Field Underwater Explosion Response of Polyurea Coated Composite Plates

“…Work by Latourte et al [1] utilized a scaled fluid structure method [2] to study the failure modes and damage mechanisms in both monolithic and sandwich plates subjected to underwater impulsive loads. Schiffer and Tagarelli [3] have compared the response of glass and carbon reinforced composites and found that the glass reinforced plates had larger blast resistance than the carbon plates due to their higher tensile ductility. Avachat and Zhou [4] studied the effects of underwater shock loading on filament wound and sandwich composite cylinder and found that while both constructions exhibited similar damage mechanisms, including delamination, fiber failure and matrix cracking, the sandwich structure had overall better performance than a monolithic cylinder with similar mass.…”