An experimental device for forced ship model roll

Abstract

The invention aims to provide an experiment device for forcing rolling of a ship model. The experiment device comprises a bottom panel, an alternating-current servo motor, first to fifth synchronous belt pulleys, a slide rail, a connecting corner support and a press plate, the shape of the bottom panel is a combined shape of trapezoid and rectangle, the long side of the rectangle is superposed with the lower bottom side of the trapezoid, the alternating-current servo motor is mounted below the bottom panel, the first to fifth synchronous belt pulleys are mounted above the bottom panel, and a synchronous belt is wound on the first to fifth synchronous belt pulleys, and the alternating-current servo motor is connected with the first synchronous belt pulley. The slide rail is fixed in the rectangle of the bottom panel, a slider is mounted on the slide rail, the first side of the connecting corner support is connected with the slider, and the press plate connects the synchronous belt with the second side of the connecting corner support. The rolling of the ship model under the action of various all-directional waves can be simulated, and motion of the ship model under the condition of diagonal waves can be simulated under the condition of a towing tank and in a head sea condition without using a joist barrow.

Description

technical field [0001] The invention relates to an experimental device for simulating rolling. Background technique [0002] It is an effective method to study the interaction between marine buoys and waves to determine the different motion response characteristics of various marine structures in waves through model tests. In various ship model tests, the oblique wave test is an indispensable test link. Generally, various waves are generated by artificially controlling the movement of the wave-making plate. The ship model simulates the oblique course under the joint action of the tank trailer and the girder sports. At present, there are few pools that can be used to simulate oblique wave motion, and the general shape is a square pool, which has a small scale and high test cost. For ship models with large scale and high speed, the width of the pool greatly restricts the lateral movement of the ship, resulting in a short actual effective voyage and very limited wave angles t...

AI Technical Summary

Problems solved by technology

At present, there are few pools that can be used to simulate the movement of oblique waves, and the general shape is a square pool, which is small in size and high in test costs.

For a ship model with a large scale and high speed, the width of the pool greatly limits the lateral movement of the ship, resulting in a short actual effective voyage, and the wave direction angle that can be simulated in the oblique wave test is very limited

At the same time, due to the large scale of the ship model, the pool wall effect is large, which affects the accuracy of the test

Moreover, the test method of using the longitudinal motion of the trailer and the lateral motion of the girder to simulate the movement of the ship in oblique waves has defects. It is manifested in that when the trailer and the girder brake, there are two directions of force on the ship model. Torque will be generated under the action of forces in two different directions, which will cause damage to the connection structure between the trailer and the ship model and the test device

Therefore, the existing test methods for the high-speed oblique wave test have great limitations, and it is impossible to realize the simulation of the ship model oblique wave test under the full wave angle.

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