Underwater structure collision test device

Abstract

The invention relates to the technical field of underwater pressure-resistant structure collision tests, in particular to an underwater structure collision test device. The device comprises a semi-open type pressure cylinder, a measuring cavity is formed in the semi-open type pressure cylinder, and a circular opening end communicated with the measuring cavity is arranged on the upper end face of the semi-open type pressure cylinder; a pressure-bearing piston is arranged at the open end of the semi-open pressure cylinder; the pressure-bearing piston is provided with a test piece mounting hole which is through up and down, a cylindrical shell structure test piece is arranged in the measuring cavity of the semi-open pressure cylinder, and liquid is filled between the inner wall of the measuring cavity of the semi-open pressure cylinder and the pressure-bearing piston and between the cylindrical shell structure test piece and the pressure-bearing piston. Independent pressurizing devices are respectively arranged on a cylindrical shell structure test piece and the pressure-bearing piston; axial stress and circumferential stress acting on the cylindrical shell structure can be separated,the pressure stress state of the cylindrical shell structure test piece can be changed by changing the loads of the two independent pressurizing devices, and therefore the underwater collision test of the cylindrical shell structure can be conducted in different stress states.

Description

technical field [0001] The invention relates to the technical field of underwater pressure-resistant structure crash tests, in particular to an underwater structure crash test device. Background technique [0002] Deep-sea equipment plays a pivotal role in the development of marine resources. In recent years, my country's deep-sea equipment has made great progress. Among them, the "Jiaolong" and "Deep Sea Warrior" manned submersibles are important representatives of advanced deep-sea equipment and technology. [0003] However, while developing engineering problems, the corresponding basic scientific problems have not been effectively solved. At present, when designing large-scale equipment such as submersibles and submarines, the factors of underwater collisions are not considered enough, and the design is mostly based on the safety factor. The form is generally covered, and there is no in-depth study of the deformation response and failure mechanism of the structure when th...

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Problems solved by technology

Therefore, this brings greater difficulty to the design of the test device. In a conventional closed pressure cylinder, the above-mentioned tests are too closed, and it is difficult to observe the test state, and it is impossible to accurately control the test phenomenon and results.

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