Ship pool collision testing method

Abstract

The invention relates to a ship pool collision testing method.The ship pool collision testing method comprises the specific steps that 1, a collided ship model is moved to a collision position, two mooring ropes are straightened so that the collided ship model can be in a static floating state at a collided angle, and the two mooring ropes are loosened; 2, a colliding ship model is towed to reach a predetermined collision speed by using a tow truck and then collides with the collided ship model, two steel wire ropes connected to the front end frame of a truss of the tow truck and used for controlling an attitude of the colliding ship model are cut off at the moment, the tow truck brakes till stopping is achieved, data of a force sensor and data of an acceleration sensor after collision are acquired, and a collision force time travel curve and a collided ship model acceleration response time travel curve in the collision process are obtained through analysis; 3, the speed of the collided ship model, the flotation condition of the collided ship model, the collided angle and a bow form are adjusted, and then a collision test is performed.The ship pool collision testing method can carry out collision effect verification under the different collision speed conditions, better reflects a real seaborne collision environment and is smaller in risk, low in cost and flexible and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of ship manufacturing, in particular to a collision test method for a ship pool. Background technique [0002] Since the early 1960s, many ship collision tests have been completed in succession all over the world. From 1960 to 1976, researchers in Italy, Germany and Japan conducted a series of model tests, the main purpose of which was to design nuclear-powered ships and protect nuclear power plants from collision damage. [0003] Germany has successively completed collision tests on 12 ship models (Woisin, 1979). The scale of the models ranges from 1 / 12 to 1 / 17.5, and the collision bow slides down freely along the inclined rails. The test results found that the impacted bow suffered serious collision damage and deformation, mainly because the side structure of the impacted ship was designed as a protective structure, and its rigidity was much higher than that of the impacted bow. [0004] A total of 24 mo...

AI Technical Summary

Problems solved by technology

Ship collision is a strongly nonlinear problem, and the law of similarity is very important in the model test of ship collision, but the shell rupture in the small-scale scale model and the shell rupture of the real ship do not conform to the similarity law, and some components in the scale model are often deleted, so the test results of the scale model are usually difficult to be directly used to simulate the real ship collision process

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