Method and device for testing structural collapse response of ship hull girder under waves

Abstract

The invention discloses a method and a device for testing the structural collapse response of a ship hull girder under waves. The device comprises a buckling hinge and a ship hull model, wherein the ship hull model is divided into two ship hull sections from the middle part; the two ship hull sections are hinged together, thus being capable of making relative rotation along the vertical direction; the buckling hinge comprises an upper hinge piece, a lower hinge piece and two ship hull connecting plates; the upper hinge piece and the lower hinge piece are long-strip-shaped sheet metals, and the thickness and width of the upper hinge piece are smaller than those of the lower hinge piece; the upper hinge piece and the lower hinge piece are parallel to a waterline plane of the ship hull model, and the two ends of the upper hinge piece and the lower hinge piece are respectively and fixedly connected with the two ship hull connecting plates; the two ship hull connecting plates are respectively and fixedly connected with the two ship hull sections. The method adopts the device for testing the structural collapse response for testing; two wireless inclinometers are used for recording the longitudinal inclination motions of the ship hull sections in real time, so that the rotational deformation of the buckling hinge in the middle of a test model under the condition of different wave heights can be obtained.

Description

technical field [0001] The invention relates to a hull girder structural test, in particular to a structural collapse response test method and device of a hull girder under waves. Background technique [0002] In recent years, the trend of large-scale marine transport ships is very obvious, especially container ships are getting bigger and bigger, with huge openings and relatively small rigidity. Therefore, the giantization of ships puts forward higher requirements for ship structure design. Many researchers have devoted themselves to developing and improving accurate ultimate strength calculation methods and determining the external wave conditions that cause the ultimate strength of ships. The study of ocean wave conditions that cause ultimate strength of ships can guide the design of ship structures, clarify the navigable sea conditions of ships, and guide ships. Avoid sea conditions with larger wave heights. [0003] Ships sometimes encounter high waves when sailing at ...

AI Technical Summary

Problems solved by technology

On the one hand, the collapse of a real ship needs to encounter real extreme ocean waves, and the cost of real ship testing is huge, and large waves at sea are rare; The crash response is generated under

However, the usual mechanical simulation calculates the wave load and structural strength separately, without considering the movement of the hull under the waves and the influence of fluid-structure interaction, and it is difficult to truly reveal the failure mechanism of the ship structure under large waves

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