Objective This paper aims to explore the internal load characteristics of a damaged cabin under near-field underwater explosion.
Method A cabin model is designed and applied to a near-field underwater explosion experiment during the prophase. The internal load characteristics including high-speed fragments, quastic pressure, and jetting are analyzed based on the experimental results and applied with the numerical simulation and theory methods.
Results The velocity of high-speed fragments flying into the damaged cabin from shipboard plates is calculated using the modified Taylor plate method. The crevasses of the shipboard plates mainly result from shockwave pressure, and quastic pressure due to the expanding bubble entering the damaged cabin further damages the inner structure. Damage from jetting is evident in this experiment, and the three main reasons behind it are identified.
Conclusion This paper can provide valuable references for predicting the internal load characteristics of a damaged cabin under near-field underwater explosion.