Due to the protrusion and slotting at the wheels,the shape and structure of the wheeled amphibious vehicle is quite different from that of the conventional hull,and the water motion performance is also more complex.With traditional theoretical calculations,it is difficult to accurately estimate the water resistance and its distribution.In this paper,the hydrodynamic analysis software FLUENT is used to simulate and analyze the initial design model,and according to the simulation results and the pressure distribution in each region,the shape and weight center of gravity distribution of the vehicle body are optimized for multiple rounds,and the final optimization results are simulated and verified by the water tank test,and finally the vehicle body configuration that meets the requirements of the initial mission objectives is obtained.This work also provides a reference for the subsequent design of the amphibious vehicle body configuration.
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