Hydrostatic failure behavior of externally pressurized ceramic egg-shaped shells

This study investigated the failure behavior of ceramic egg-shaped shells under external pressure. Four ceramic egg-shaped shells with two thicknesses were manufactured and then subjected to geometric measurements, hydrostatic pressure tests, analytical validations, and numerical simulations. The experimental results were compared with the simulation results to validate the feasibility of the numerical modeling. Furthermore, the effects of thickness and shape on ceramic egg-shaped shells were explored. The research findings indicate that ceramic egg-shaped shells have excellent compressive properties. The performance ratio of these ceramic egg-shaped shells is approximately 10 and 5 times higher than those of resin and steel egg-shaped shells, respectively. This finding highlights the crucial role that affordable ceramic materials can play in facilitating the widespread use of submersibles in deep waters.