The current evaluation methods of hull wave load include numerical simulation, model experiment and real ship experiment. Numerical simulation combined with model experiment is a reasonable and economical method to evaluate hull wave load. For ships with bottom sonar opening, the effect of sonar opening on hull wave load is still unclear, and model experiment is therefore necessarily to be carried out to analyze the characteristics of wave load. Taking a certain type of example ship as the research object, this study designs the test ship model on the premise that the model is similar to the real ship in geometrical shape, motion and power. Model experiments under multiple speed, wave height and wave direction were carried out to measure the motion of the ship model, vertical and horizontal bending moments of the hull beam, torque, bow slamming pressure and bottom pressure at the large opening area, according to which the characteristics of ship wave load are studied.
Based on the model experiment of wave load for ship in intact state, the model experiment of ship in damaged state (hull bottom damage) is also carried out in this study, which can lay a foundation for the residual strength assessment of the ship after damage, and provide a technical reference for the design and strength checking of hull structure.
The current evaluation methods of hull wave load include numerical simulation, model experiment and real ship experiment (Li, Deng, Ren and Sun, 2020) (Kapsenberg, 2011). Numerical simulation combined with model experiment is a reasonable and economical method to evaluate hull wave load (Chen, Jiao and Li, 2017)(Jiao, Zhao, Chen, Li, 2019). In the model experiment, the ship model should be similar to the real ship in geometrical shape, motion and dynamic (Tang, Ren and Li, 2016). The characteristics of hull wave load could be studied through a series of ship model experiments under multiple navigational speed, wave height and wave direction to measure ship motion, torque, vertical and horizontal bending moment of hull beam, bow flare slamming pressure and pressure at bottom large opening area. (DESSI and MARIANI, 2006)
