Numerical simulation of water-entry process of the aircraft cabin structure based on material point method

The water entry process of the aircraft will affect the flotation characteristics of the aircraft, which is an important topic to ensure the safety of the aircraft. It usually requires a significant amount of time to simulate the water-entry process accurately. In the current study, the material point method is applied to solve the water-entry problem of the aircraft cabin structure, which has the potential to reduce the time cost while ensuring accuracy. The method is introduced first and is verified by comparing it with the existing results. Then, a simplified cabin structure is established, and the water-entry process is analysed, which shows the feasibility of the proposed method.