Structural response analysis of an underwater robot carrier based on second-order stokes wave action

Based on the modular design idea, we design an underwater robot carrier structure with truss structure as the main body and can carry and transport underwater robots and auxiliary equipment for underwater operation. The structure is required to be simple, practical, safe, stable and reliable and easy to store. Referring to the wave research report in Coastal Dynamics, the second-order stokes wave parameters with high frequency are selected, the three-dimensional numerical wave tank is established by Fluent software, the wave perturbation at the entrance is realized based on the boundary wave creation method, the free liquid surface is tracked by VOF calculation method and the second-order stokes wave is numerically simulated based on the damped wave dissipation technique. The simulation is carried out to calculate the force characteristics of the carrier structure under the action of waves and water flow. By analyzing the response characteristics of the key parts of the carrier structure, the displacement and stress time curves without and with suction cups are obtained, and the extreme values of the curves are statistically analyzed to verify the stability and safety of the carrier structure of the underwater robot.