Abstract
A numerical analysis is performed to simulate the water entry of a flexible bag of air cushion vehicles (ACVs) considering a diaphragm based on the control volume and arbitrary Lagrangian–Eulerian methods. The results of the water entry tests presented the developed numerical strategy with reasonable accuracy. The effects of the diaphragm on the variations in the free surface, deformation, internal pressure, and maximum principal stress are discussed. The developed numerical strategy can provide a useful reference for the analysis of flexible bags for ACVs.
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